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Finding the Fourth Proportional to 18,532.40, 27,802.20 and 8,002.40

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Solution

The fourth proportional to 18,532.40, 27,802.20 and 8,002.40 is: 12,005.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,532.40 : 27,802.20 = 8,002.40 : x
  2. Step 2: Convert to fraction form
    18,532.40/27,802.20 = 8,002.40/x
  3. Step 3: Cross multiply
    18,532.40x = 27,802.20 × 8,002.40
  4. Step 4: Simplify right side
    18,532.40x = 222,484,325.28
  5. Step 5: Solve for x
    x = 222,484,325.28/18,532.40
  6. Step 6: Final answer
    x = 12,005.15

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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.