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Finding the Fourth Proportional to 40,592.40, 60,898.20 and 12,890.40

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Solution

The fourth proportional to 40,592.40, 60,898.20 and 12,890.40 is: 19,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,592.40 : 60,898.20 = 12,890.40 : x
  2. Step 2: Convert to fraction form
    40,592.40/60,898.20 = 12,890.40/x
  3. Step 3: Cross multiply
    40,592.40x = 60,898.20 × 12,890.40
  4. Step 4: Simplify right side
    40,592.40x = 785,002,157.28
  5. Step 5: Solve for x
    x = 785,002,157.28/40,592.40
  6. Step 6: Final answer
    x = 19,338.65

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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.