Home / 14,267.52-19,689.92-7,980

Finding the Fourth Proportional to 14,267.52, 19,689.92 and 7,980

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Solution

The fourth proportional to 14,267.52, 19,689.92 and 7,980 is: 11,012.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,267.52 : 19,689.92 = 7,980 : x
  2. Step 2: Convert to fraction form
    14,267.52/19,689.92 = 7,980/x
  3. Step 3: Cross multiply
    14,267.52x = 19,689.92 × 7,980
  4. Step 4: Simplify right side
    14,267.52x = 157,125,561.60
  5. Step 5: Solve for x
    x = 157,125,561.60/14,267.52
  6. Step 6: Final answer
    x = 11,012.82

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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.