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Finding the Fourth Proportional to 28,070.92, 42,071.12 and 14,034.86

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Solution

The fourth proportional to 28,070.92, 42,071.12 and 14,034.86 is: 21,034.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.92 : 42,071.12 = 14,034.86 : x
  2. Step 2: Convert to fraction form
    28,070.92/42,071.12 = 14,034.86/x
  3. Step 3: Cross multiply
    28,070.92x = 42,071.12 × 14,034.86
  4. Step 4: Simplify right side
    28,070.92x = 590,462,279.24
  5. Step 5: Solve for x
    x = 590,462,279.24/28,070.92
  6. Step 6: Final answer
    x = 21,034.66

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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.