Home / 31,516.89-47,280.95-10,458.20

Finding the Fourth Proportional to 31,516.89, 47,280.95 and 10,458.20

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Solution

The fourth proportional to 31,516.89, 47,280.95 and 10,458.20 is: 15,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,516.89 : 47,280.95 = 10,458.20 : x
  2. Step 2: Convert to fraction form
    31,516.89/47,280.95 = 10,458.20/x
  3. Step 3: Cross multiply
    31,516.89x = 47,280.95 × 10,458.20
  4. Step 4: Simplify right side
    31,516.89x = 494,473,342.59
  5. Step 5: Solve for x
    x = 494,473,342.59/31,516.89
  6. Step 6: Final answer
    x = 15,689.15

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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.