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Finding the Fourth Proportional to 13,665.60, 20,500.02 and 4,898.16

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Solution

The fourth proportional to 13,665.60, 20,500.02 and 4,898.16 is: 7,347.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.60 : 20,500.02 = 4,898.16 : x
  2. Step 2: Convert to fraction form
    13,665.60/20,500.02 = 4,898.16/x
  3. Step 3: Cross multiply
    13,665.60x = 20,500.02 × 4,898.16
  4. Step 4: Simplify right side
    13,665.60x = 100,412,377.96
  5. Step 5: Solve for x
    x = 100,412,377.96/13,665.60
  6. Step 6: Final answer
    x = 7,347.82

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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.