Home / 28,045.38-42,070.91-11,402.85

Finding the Fourth Proportional to 28,045.38, 42,070.91 and 11,402.85

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Solution

The fourth proportional to 28,045.38, 42,070.91 and 11,402.85 is: 17,105.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.38 : 42,070.91 = 11,402.85 : x
  2. Step 2: Convert to fraction form
    28,045.38/42,070.91 = 11,402.85/x
  3. Step 3: Cross multiply
    28,045.38x = 42,070.91 × 11,402.85
  4. Step 4: Simplify right side
    28,045.38x = 479,728,276.09
  5. Step 5: Solve for x
    x = 479,728,276.09/28,045.38
  6. Step 6: Final answer
    x = 17,105.43

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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.