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Finding the Fourth Proportional to 27,143.70, 40,715.55 and 9,615.30

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Solution

The fourth proportional to 27,143.70, 40,715.55 and 9,615.30 is: 14,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.70 : 40,715.55 = 9,615.30 : x
  2. Step 2: Convert to fraction form
    27,143.70/40,715.55 = 9,615.30/x
  3. Step 3: Cross multiply
    27,143.70x = 40,715.55 × 9,615.30
  4. Step 4: Simplify right side
    27,143.70x = 391,492,227.92
  5. Step 5: Solve for x
    x = 391,492,227.92/27,143.70
  6. Step 6: Final answer
    x = 14,422.95

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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.