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Finding the Fourth Proportional to 20,337.60, 30,507.78 and 6,298.86

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Solution

The fourth proportional to 20,337.60, 30,507.78 and 6,298.86 is: 9,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.60 : 30,507.78 = 6,298.86 : x
  2. Step 2: Convert to fraction form
    20,337.60/30,507.78 = 6,298.86/x
  3. Step 3: Cross multiply
    20,337.60x = 30,507.78 × 6,298.86
  4. Step 4: Simplify right side
    20,337.60x = 192,164,235.13
  5. Step 5: Solve for x
    x = 192,164,235.13/20,337.60
  6. Step 6: Final answer
    x = 9,448.72

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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.