Home / 20,838.23-31,275.02-8,366.69

Finding the Fourth Proportional to 20,838.23, 31,275.02 and 8,366.69

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Solution

The fourth proportional to 20,838.23, 31,275.02 and 8,366.69 is: 12,557.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.23 : 31,275.02 = 8,366.69 : x
  2. Step 2: Convert to fraction form
    20,838.23/31,275.02 = 8,366.69/x
  3. Step 3: Cross multiply
    20,838.23x = 31,275.02 × 8,366.69
  4. Step 4: Simplify right side
    20,838.23x = 261,668,240.71
  5. Step 5: Solve for x
    x = 261,668,240.71/20,838.23
  6. Step 6: Final answer
    x = 12,557.13

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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.