Home / 21,275.91-31,913.82-6,484.95

Finding the Fourth Proportional to 21,275.91, 31,913.82 and 6,484.95

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Solution

The fourth proportional to 21,275.91, 31,913.82 and 6,484.95 is: 9,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.91 : 31,913.82 = 6,484.95 : x
  2. Step 2: Convert to fraction form
    21,275.91/31,913.82 = 6,484.95/x
  3. Step 3: Cross multiply
    21,275.91x = 31,913.82 × 6,484.95
  4. Step 4: Simplify right side
    21,275.91x = 206,959,527.01
  5. Step 5: Solve for x
    x = 206,959,527.01/21,275.91
  6. Step 6: Final answer
    x = 9,727.41

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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.