Home / 15,023.08-20,723.40-9,358.78

Finding the Fourth Proportional to 15,023.08, 20,723.40 and 9,358.78

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Solution

The fourth proportional to 15,023.08, 20,723.40 and 9,358.78 is: 12,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.08 : 20,723.40 = 9,358.78 : x
  2. Step 2: Convert to fraction form
    15,023.08/20,723.40 = 9,358.78/x
  3. Step 3: Cross multiply
    15,023.08x = 20,723.40 × 9,358.78
  4. Step 4: Simplify right side
    15,023.08x = 193,945,741.45
  5. Step 5: Solve for x
    x = 193,945,741.45/15,023.08
  6. Step 6: Final answer
    x = 12,909.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.