Home / 20,381.55-28,113.58-14,724.61

Finding the Fourth Proportional to 20,381.55, 28,113.58 and 14,724.61

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Solution

The fourth proportional to 20,381.55, 28,113.58 and 14,724.61 is: 20,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.55 : 28,113.58 = 14,724.61 : x
  2. Step 2: Convert to fraction form
    20,381.55/28,113.58 = 14,724.61/x
  3. Step 3: Cross multiply
    20,381.55x = 28,113.58 × 14,724.61
  4. Step 4: Simplify right side
    20,381.55x = 413,961,528.40
  5. Step 5: Solve for x
    x = 413,961,528.40/20,381.55
  6. Step 6: Final answer
    x = 20,310.60

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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.