Home / 27,639.86-38,143.10-15,064.61

Finding the Fourth Proportional to 27,639.86, 38,143.10 and 15,064.61

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Solution

The fourth proportional to 27,639.86, 38,143.10 and 15,064.61 is: 20,789.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.86 : 38,143.10 = 15,064.61 : x
  2. Step 2: Convert to fraction form
    27,639.86/38,143.10 = 15,064.61/x
  3. Step 3: Cross multiply
    27,639.86x = 38,143.10 × 15,064.61
  4. Step 4: Simplify right side
    27,639.86x = 574,610,772.64
  5. Step 5: Solve for x
    x = 574,610,772.64/27,639.86
  6. Step 6: Final answer
    x = 20,789.21

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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.