Home / 47,270.05-70,920.11-13,990.30

Finding the Fourth Proportional to 47,270.05, 70,920.11 and 13,990.30

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Solution

The fourth proportional to 47,270.05, 70,920.11 and 13,990.30 is: 20,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,270.05 : 70,920.11 = 13,990.30 : x
  2. Step 2: Convert to fraction form
    47,270.05/70,920.11 = 13,990.30/x
  3. Step 3: Cross multiply
    47,270.05x = 70,920.11 × 13,990.30
  4. Step 4: Simplify right side
    47,270.05x = 992,193,614.93
  5. Step 5: Solve for x
    x = 992,193,614.93/47,270.05
  6. Step 6: Final answer
    x = 20,989.90

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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.