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Finding the Fourth Proportional to 14,124.53, 19,491.84 and 7,836.90

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Solution

The fourth proportional to 14,124.53, 19,491.84 and 7,836.90 is: 10,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.53 : 19,491.84 = 7,836.90 : x
  2. Step 2: Convert to fraction form
    14,124.53/19,491.84 = 7,836.90/x
  3. Step 3: Cross multiply
    14,124.53x = 19,491.84 × 7,836.90
  4. Step 4: Simplify right side
    14,124.53x = 152,755,600.90
  5. Step 5: Solve for x
    x = 152,755,600.90/14,124.53
  6. Step 6: Final answer
    x = 10,814.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.