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Finding the Fourth Proportional to 30,691.40, 46,034.40 and 8,502.80

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Solution

The fourth proportional to 30,691.40, 46,034.40 and 8,502.80 is: 12,753.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,691.40 : 46,034.40 = 8,502.80 : x
  2. Step 2: Convert to fraction form
    30,691.40/46,034.40 = 8,502.80/x
  3. Step 3: Cross multiply
    30,691.40x = 46,034.40 × 8,502.80
  4. Step 4: Simplify right side
    30,691.40x = 391,421,296.32
  5. Step 5: Solve for x
    x = 391,421,296.32/30,691.40
  6. Step 6: Final answer
    x = 12,753.45

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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.