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Finding the Fourth Proportional to 18,407.55, 27,569.78 and 8,526.07

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Solution

The fourth proportional to 18,407.55, 27,569.78 and 8,526.07 is: 12,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.55 : 27,569.78 = 8,526.07 : x
  2. Step 2: Convert to fraction form
    18,407.55/27,569.78 = 8,526.07/x
  3. Step 3: Cross multiply
    18,407.55x = 27,569.78 × 8,526.07
  4. Step 4: Simplify right side
    18,407.55x = 235,061,715.00
  5. Step 5: Solve for x
    x = 235,061,715.00/18,407.55
  6. Step 6: Final answer
    x = 12,769.86

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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.