Home / 25,128.90-37,694.25-12,642.13

Finding the Fourth Proportional to 25,128.90, 37,694.25 and 12,642.13

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Solution

The fourth proportional to 25,128.90, 37,694.25 and 12,642.13 is: 18,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,128.90 : 37,694.25 = 12,642.13 : x
  2. Step 2: Convert to fraction form
    25,128.90/37,694.25 = 12,642.13/x
  3. Step 3: Cross multiply
    25,128.90x = 37,694.25 × 12,642.13
  4. Step 4: Simplify right side
    25,128.90x = 476,535,426.06
  5. Step 5: Solve for x
    x = 476,535,426.06/25,128.90
  6. Step 6: Final answer
    x = 18,963.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.