Home / 15,393.99-21,212.32-10,615.39

Finding the Fourth Proportional to 15,393.99, 21,212.32 and 10,615.39

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Solution

The fourth proportional to 15,393.99, 21,212.32 and 10,615.39 is: 14,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.99 : 21,212.32 = 10,615.39 : x
  2. Step 2: Convert to fraction form
    15,393.99/21,212.32 = 10,615.39/x
  3. Step 3: Cross multiply
    15,393.99x = 21,212.32 × 10,615.39
  4. Step 4: Simplify right side
    15,393.99x = 225,177,049.60
  5. Step 5: Solve for x
    x = 225,177,049.60/15,393.99
  6. Step 6: Final answer
    x = 14,627.59

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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.