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Finding the Fourth Proportional to 47,209.83, 70,793.55 and 13,918.20

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Solution

The fourth proportional to 47,209.83, 70,793.55 and 13,918.20 is: 20,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,209.83 : 70,793.55 = 13,918.20 : x
  2. Step 2: Convert to fraction form
    47,209.83/70,793.55 = 13,918.20/x
  3. Step 3: Cross multiply
    47,209.83x = 70,793.55 × 13,918.20
  4. Step 4: Simplify right side
    47,209.83x = 985,318,787.61
  5. Step 5: Solve for x
    x = 985,318,787.61/47,209.83
  6. Step 6: Final answer
    x = 20,871.05

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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.