Home / 15,507.31-21,392.20-10,132.89

Finding the Fourth Proportional to 15,507.31, 21,392.20 and 10,132.89

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Solution

The fourth proportional to 15,507.31, 21,392.20 and 10,132.89 is: 13,978.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.31 : 21,392.20 = 10,132.89 : x
  2. Step 2: Convert to fraction form
    15,507.31/21,392.20 = 10,132.89/x
  3. Step 3: Cross multiply
    15,507.31x = 21,392.20 × 10,132.89
  4. Step 4: Simplify right side
    15,507.31x = 216,764,759.32
  5. Step 5: Solve for x
    x = 216,764,759.32/15,507.31
  6. Step 6: Final answer
    x = 13,978.23

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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.