Home / 20,697.72-28,588.50-15,023.40

Finding the Fourth Proportional to 20,697.72, 28,588.50 and 15,023.40

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Solution

The fourth proportional to 20,697.72, 28,588.50 and 15,023.40 is: 20,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.72 : 28,588.50 = 15,023.40 : x
  2. Step 2: Convert to fraction form
    20,697.72/28,588.50 = 15,023.40/x
  3. Step 3: Cross multiply
    20,697.72x = 28,588.50 × 15,023.40
  4. Step 4: Simplify right side
    20,697.72x = 429,496,470.90
  5. Step 5: Solve for x
    x = 429,496,470.90/20,697.72
  6. Step 6: Final answer
    x = 20,750.91

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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.