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Finding the Fourth Proportional to 40,383.70, 60,578.65 and 12,306.13

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Solution

The fourth proportional to 40,383.70, 60,578.65 and 12,306.13 is: 18,460.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,383.70 : 60,578.65 = 12,306.13 : x
  2. Step 2: Convert to fraction form
    40,383.70/60,578.65 = 12,306.13/x
  3. Step 3: Cross multiply
    40,383.70x = 60,578.65 × 12,306.13
  4. Step 4: Simplify right side
    40,383.70x = 745,488,606.06
  5. Step 5: Solve for x
    x = 745,488,606.06/40,383.70
  6. Step 6: Final answer
    x = 18,460.14

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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.