Home / 31,516.86-47,275.29-8,143.30

Finding the Fourth Proportional to 31,516.86, 47,275.29 and 8,143.30

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Solution

The fourth proportional to 31,516.86, 47,275.29 and 8,143.30 is: 12,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,516.86 : 47,275.29 = 8,143.30 : x
  2. Step 2: Convert to fraction form
    31,516.86/47,275.29 = 8,143.30/x
  3. Step 3: Cross multiply
    31,516.86x = 47,275.29 × 8,143.30
  4. Step 4: Simplify right side
    31,516.86x = 384,976,869.06
  5. Step 5: Solve for x
    x = 384,976,869.06/31,516.86
  6. Step 6: Final answer
    x = 12,214.95

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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.