Home / 20,469.61-28,251.47-11,854.55

Finding the Fourth Proportional to 20,469.61, 28,251.47 and 11,854.55

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Solution

The fourth proportional to 20,469.61, 28,251.47 and 11,854.55 is: 16,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.61 : 28,251.47 = 11,854.55 : x
  2. Step 2: Convert to fraction form
    20,469.61/28,251.47 = 11,854.55/x
  3. Step 3: Cross multiply
    20,469.61x = 28,251.47 × 11,854.55
  4. Step 4: Simplify right side
    20,469.61x = 334,908,263.16
  5. Step 5: Solve for x
    x = 334,908,263.16/20,469.61
  6. Step 6: Final answer
    x = 16,361.25

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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.