Home / 28,001.41-38,641.95-15,426.16

Finding the Fourth Proportional to 28,001.41, 38,641.95 and 15,426.16

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Solution

The fourth proportional to 28,001.41, 38,641.95 and 15,426.16 is: 21,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.41 : 38,641.95 = 15,426.16 : x
  2. Step 2: Convert to fraction form
    28,001.41/38,641.95 = 15,426.16/x
  3. Step 3: Cross multiply
    28,001.41x = 38,641.95 × 15,426.16
  4. Step 4: Simplify right side
    28,001.41x = 596,096,826.28
  5. Step 5: Solve for x
    x = 596,096,826.28/28,001.41
  6. Step 6: Final answer
    x = 21,288.10

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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.