Home / 15,418.49-21,277.36-8,344.76

Finding the Fourth Proportional to 15,418.49, 21,277.36 and 8,344.76

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Solution

The fourth proportional to 15,418.49, 21,277.36 and 8,344.76 is: 11,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.49 : 21,277.36 = 8,344.76 : x
  2. Step 2: Convert to fraction form
    15,418.49/21,277.36 = 8,344.76/x
  3. Step 3: Cross multiply
    15,418.49x = 21,277.36 × 8,344.76
  4. Step 4: Simplify right side
    15,418.49x = 177,554,462.63
  5. Step 5: Solve for x
    x = 177,554,462.63/15,418.49
  6. Step 6: Final answer
    x = 11,515.68

Related Problems

Find fourth proportional to 7,709.25, 10,638.68 and 4,172.38
Half scale
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Double scale
Find fourth proportional to 15,419.49, 21,278.74 and 8,345.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.