Home / 31,820.10-47,730.15-19,364.55

Finding the Fourth Proportional to 31,820.10, 47,730.15 and 19,364.55

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Solution

The fourth proportional to 31,820.10, 47,730.15 and 19,364.55 is: 29,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.10 : 47,730.15 = 19,364.55 : x
  2. Step 2: Convert to fraction form
    31,820.10/47,730.15 = 19,364.55/x
  3. Step 3: Cross multiply
    31,820.10x = 47,730.15 × 19,364.55
  4. Step 4: Simplify right side
    31,820.10x = 924,272,876.18
  5. Step 5: Solve for x
    x = 924,272,876.18/31,820.10
  6. Step 6: Final answer
    x = 29,046.83

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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.