Home / 20,280.92-27,985.85-11,327.18

Finding the Fourth Proportional to 20,280.92, 27,985.85 and 11,327.18

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Solution

The fourth proportional to 20,280.92, 27,985.85 and 11,327.18 is: 15,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.92 : 27,985.85 = 11,327.18 : x
  2. Step 2: Convert to fraction form
    20,280.92/27,985.85 = 11,327.18/x
  3. Step 3: Cross multiply
    20,280.92x = 27,985.85 × 11,327.18
  4. Step 4: Simplify right side
    20,280.92x = 317,000,703.77
  5. Step 5: Solve for x
    x = 317,000,703.77/20,280.92
  6. Step 6: Final answer
    x = 15,630.49

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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.