Home / 21,272.52-31,908.77-5,689.74

Finding the Fourth Proportional to 21,272.52, 31,908.77 and 5,689.74

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Solution

The fourth proportional to 21,272.52, 31,908.77 and 5,689.74 is: 8,534.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.52 : 31,908.77 = 5,689.74 : x
  2. Step 2: Convert to fraction form
    21,272.52/31,908.77 = 5,689.74/x
  3. Step 3: Cross multiply
    21,272.52x = 31,908.77 × 5,689.74
  4. Step 4: Simplify right side
    21,272.52x = 181,552,605.02
  5. Step 5: Solve for x
    x = 181,552,605.02/21,272.52
  6. Step 6: Final answer
    x = 8,534.61

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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.