Home / 14,519.12-21,780-5,158.20

Finding the Fourth Proportional to 14,519.12, 21,780 and 5,158.20

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Solution

The fourth proportional to 14,519.12, 21,780 and 5,158.20 is: 7,737.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,519.12 : 21,780 = 5,158.20 : x
  2. Step 2: Convert to fraction form
    14,519.12/21,780 = 5,158.20/x
  3. Step 3: Cross multiply
    14,519.12x = 21,780 × 5,158.20
  4. Step 4: Simplify right side
    14,519.12x = 112,345,596
  5. Step 5: Solve for x
    x = 112,345,596/14,519.12
  6. Step 6: Final answer
    x = 7,737.77

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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.