Home / 20,551.12-28,360.43-11,601.53

Finding the Fourth Proportional to 20,551.12, 28,360.43 and 11,601.53

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Solution

The fourth proportional to 20,551.12, 28,360.43 and 11,601.53 is: 16,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.12 : 28,360.43 = 11,601.53 : x
  2. Step 2: Convert to fraction form
    20,551.12/28,360.43 = 11,601.53/x
  3. Step 3: Cross multiply
    20,551.12x = 28,360.43 × 11,601.53
  4. Step 4: Simplify right side
    20,551.12x = 329,024,379.46
  5. Step 5: Solve for x
    x = 329,024,379.46/20,551.12
  6. Step 6: Final answer
    x = 16,010.05

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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.