Home / 15,449.31-21,316.44-10,422.84

Finding the Fourth Proportional to 15,449.31, 21,316.44 and 10,422.84

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Solution

The fourth proportional to 15,449.31, 21,316.44 and 10,422.84 is: 14,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.31 : 21,316.44 = 10,422.84 : x
  2. Step 2: Convert to fraction form
    15,449.31/21,316.44 = 10,422.84/x
  3. Step 3: Cross multiply
    15,449.31x = 21,316.44 × 10,422.84
  4. Step 4: Simplify right side
    15,449.31x = 222,177,843.49
  5. Step 5: Solve for x
    x = 222,177,843.49/15,449.31
  6. Step 6: Final answer
    x = 14,381.09

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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.