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Finding the Fourth Proportional to 18,315.81, 27,424.50 and 15,068.11

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Solution

The fourth proportional to 18,315.81, 27,424.50 and 15,068.11 is: 22,561.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.81 : 27,424.50 = 15,068.11 : x
  2. Step 2: Convert to fraction form
    18,315.81/27,424.50 = 15,068.11/x
  3. Step 3: Cross multiply
    18,315.81x = 27,424.50 × 15,068.11
  4. Step 4: Simplify right side
    18,315.81x = 413,235,382.70
  5. Step 5: Solve for x
    x = 413,235,382.70/18,315.81
  6. Step 6: Final answer
    x = 22,561.68

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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.