Home / 20,417.52-28,168.92-13,348.08

Finding the Fourth Proportional to 20,417.52, 28,168.92 and 13,348.08

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Solution

The fourth proportional to 20,417.52, 28,168.92 and 13,348.08 is: 18,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.52 : 28,168.92 = 13,348.08 : x
  2. Step 2: Convert to fraction form
    20,417.52/28,168.92 = 13,348.08/x
  3. Step 3: Cross multiply
    20,417.52x = 28,168.92 × 13,348.08
  4. Step 4: Simplify right side
    20,417.52x = 376,000,997.67
  5. Step 5: Solve for x
    x = 376,000,997.67/20,417.52
  6. Step 6: Final answer
    x = 18,415.61

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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.