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Finding the Fourth Proportional to 18,541.03, 27,812.85 and 7,447.74

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Solution

The fourth proportional to 18,541.03, 27,812.85 and 7,447.74 is: 11,172.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,541.03 : 27,812.85 = 7,447.74 : x
  2. Step 2: Convert to fraction form
    18,541.03/27,812.85 = 7,447.74/x
  3. Step 3: Cross multiply
    18,541.03x = 27,812.85 × 7,447.74
  4. Step 4: Simplify right side
    18,541.03x = 207,142,875.46
  5. Step 5: Solve for x
    x = 207,142,875.46/18,541.03
  6. Step 6: Final answer
    x = 11,172.13

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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.