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Finding the Fourth Proportional to 25,491.78, 38,230.99 and 11,443.95

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Solution

The fourth proportional to 25,491.78, 38,230.99 and 11,443.95 is: 17,162.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,491.78 : 38,230.99 = 11,443.95 : x
  2. Step 2: Convert to fraction form
    25,491.78/38,230.99 = 11,443.95/x
  3. Step 3: Cross multiply
    25,491.78x = 38,230.99 × 11,443.95
  4. Step 4: Simplify right side
    25,491.78x = 437,513,509.40
  5. Step 5: Solve for x
    x = 437,513,509.40/25,491.78
  6. Step 6: Final answer
    x = 17,162.93

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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.