Home / 20,658.24-28,500.48-12,697.92

Finding the Fourth Proportional to 20,658.24, 28,500.48 and 12,697.92

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Solution

The fourth proportional to 20,658.24, 28,500.48 and 12,697.92 is: 17,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.24 : 28,500.48 = 12,697.92 : x
  2. Step 2: Convert to fraction form
    20,658.24/28,500.48 = 12,697.92/x
  3. Step 3: Cross multiply
    20,658.24x = 28,500.48 × 12,697.92
  4. Step 4: Simplify right side
    20,658.24x = 361,896,815.00
  5. Step 5: Solve for x
    x = 361,896,815.00/20,658.24
  6. Step 6: Final answer
    x = 17,518.28

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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.