Home / 20,652.11-28,500.71-11,220.68

Finding the Fourth Proportional to 20,652.11, 28,500.71 and 11,220.68

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Solution

The fourth proportional to 20,652.11, 28,500.71 and 11,220.68 is: 15,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.11 : 28,500.71 = 11,220.68 : x
  2. Step 2: Convert to fraction form
    20,652.11/28,500.71 = 11,220.68/x
  3. Step 3: Cross multiply
    20,652.11x = 28,500.71 × 11,220.68
  4. Step 4: Simplify right side
    20,652.11x = 319,797,264.63
  5. Step 5: Solve for x
    x = 319,797,264.63/20,652.11
  6. Step 6: Final answer
    x = 15,484.96

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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.