Home / 28,116.86-38,801.30-15,541.61

Finding the Fourth Proportional to 28,116.86, 38,801.30 and 15,541.61

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Solution

The fourth proportional to 28,116.86, 38,801.30 and 15,541.61 is: 21,447.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.86 : 38,801.30 = 15,541.61 : x
  2. Step 2: Convert to fraction form
    28,116.86/38,801.30 = 15,541.61/x
  3. Step 3: Cross multiply
    28,116.86x = 38,801.30 × 15,541.61
  4. Step 4: Simplify right side
    28,116.86x = 603,034,400.38
  5. Step 5: Solve for x
    x = 603,034,400.38/28,116.86
  6. Step 6: Final answer
    x = 21,447.43

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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.