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Finding the Fourth Proportional to 28,302.35, 42,459.53 and 9,581.49

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Solution

The fourth proportional to 28,302.35, 42,459.53 and 9,581.49 is: 14,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,302.35 : 42,459.53 = 9,581.49 : x
  2. Step 2: Convert to fraction form
    28,302.35/42,459.53 = 9,581.49/x
  3. Step 3: Cross multiply
    28,302.35x = 42,459.53 × 9,581.49
  4. Step 4: Simplify right side
    28,302.35x = 406,825,514.19
  5. Step 5: Solve for x
    x = 406,825,514.19/28,302.35
  6. Step 6: Final answer
    x = 14,374.27

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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.