Home / 20,534.78-28,337.95-11,582.25

Finding the Fourth Proportional to 20,534.78, 28,337.95 and 11,582.25

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Solution

The fourth proportional to 20,534.78, 28,337.95 and 11,582.25 is: 15,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.78 : 28,337.95 = 11,582.25 : x
  2. Step 2: Convert to fraction form
    20,534.78/28,337.95 = 11,582.25/x
  3. Step 3: Cross multiply
    20,534.78x = 28,337.95 × 11,582.25
  4. Step 4: Simplify right side
    20,534.78x = 328,217,163.48
  5. Step 5: Solve for x
    x = 328,217,163.48/20,534.78
  6. Step 6: Final answer
    x = 15,983.48

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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.