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Finding the Fourth Proportional to 14,491.12, 21,736.68 and 7,913.71

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Solution

The fourth proportional to 14,491.12, 21,736.68 and 7,913.71 is: 11,870.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,491.12 : 21,736.68 = 7,913.71 : x
  2. Step 2: Convert to fraction form
    14,491.12/21,736.68 = 7,913.71/x
  3. Step 3: Cross multiply
    14,491.12x = 21,736.68 × 7,913.71
  4. Step 4: Simplify right side
    14,491.12x = 172,017,673.20
  5. Step 5: Solve for x
    x = 172,017,673.20/14,491.12
  6. Step 6: Final answer
    x = 11,870.56

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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.