Home / 14,139.27-21,200.67-4,275.90

Finding the Fourth Proportional to 14,139.27, 21,200.67 and 4,275.90

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Solution

The fourth proportional to 14,139.27, 21,200.67 and 4,275.90 is: 6,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.27 : 21,200.67 = 4,275.90 : x
  2. Step 2: Convert to fraction form
    14,139.27/21,200.67 = 4,275.90/x
  3. Step 3: Cross multiply
    14,139.27x = 21,200.67 × 4,275.90
  4. Step 4: Simplify right side
    14,139.27x = 90,651,944.85
  5. Step 5: Solve for x
    x = 90,651,944.85/14,139.27
  6. Step 6: Final answer
    x = 6,411.36

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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.