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Finding the Fourth Proportional to 18,670.36, 28,002.28 and 6,981.16

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Solution

The fourth proportional to 18,670.36, 28,002.28 and 6,981.16 is: 10,470.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.36 : 28,002.28 = 6,981.16 : x
  2. Step 2: Convert to fraction form
    18,670.36/28,002.28 = 6,981.16/x
  3. Step 3: Cross multiply
    18,670.36x = 28,002.28 × 6,981.16
  4. Step 4: Simplify right side
    18,670.36x = 195,488,397.04
  5. Step 5: Solve for x
    x = 195,488,397.04/18,670.36
  6. Step 6: Final answer
    x = 10,470.52

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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.