Home / 20,981.16-28,963.08-15,002.46

Finding the Fourth Proportional to 20,981.16, 28,963.08 and 15,002.46

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Solution

The fourth proportional to 20,981.16, 28,963.08 and 15,002.46 is: 20,709.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.16 : 28,963.08 = 15,002.46 : x
  2. Step 2: Convert to fraction form
    20,981.16/28,963.08 = 15,002.46/x
  3. Step 3: Cross multiply
    20,981.16x = 28,963.08 × 15,002.46
  4. Step 4: Simplify right side
    20,981.16x = 434,517,449.18
  5. Step 5: Solve for x
    x = 434,517,449.18/20,981.16
  6. Step 6: Final answer
    x = 20,709.89

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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.