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Finding the Fourth Proportional to 27,147.52, 40,706.70 and 12,359.76

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Solution

The fourth proportional to 27,147.52, 40,706.70 and 12,359.76 is: 18,533.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,147.52 : 40,706.70 = 12,359.76 : x
  2. Step 2: Convert to fraction form
    27,147.52/40,706.70 = 12,359.76/x
  3. Step 3: Cross multiply
    27,147.52x = 40,706.70 × 12,359.76
  4. Step 4: Simplify right side
    27,147.52x = 503,124,912.92
  5. Step 5: Solve for x
    x = 503,124,912.92/27,147.52
  6. Step 6: Final answer
    x = 18,533.00

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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.