Home / 20,381.72-30,572.67-9,280.64

Finding the Fourth Proportional to 20,381.72, 30,572.67 and 9,280.64

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Solution

The fourth proportional to 20,381.72, 30,572.67 and 9,280.64 is: 13,921.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.72 : 30,572.67 = 9,280.64 : x
  2. Step 2: Convert to fraction form
    20,381.72/30,572.67 = 9,280.64/x
  3. Step 3: Cross multiply
    20,381.72x = 30,572.67 × 9,280.64
  4. Step 4: Simplify right side
    20,381.72x = 283,733,791.25
  5. Step 5: Solve for x
    x = 283,733,791.25/20,381.72
  6. Step 6: Final answer
    x = 13,921.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.