Home / 31,517.81-47,276.75-18,211.06

Finding the Fourth Proportional to 31,517.81, 47,276.75 and 18,211.06

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Solution

The fourth proportional to 31,517.81, 47,276.75 and 18,211.06 is: 27,316.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,517.81 : 47,276.75 = 18,211.06 : x
  2. Step 2: Convert to fraction form
    31,517.81/47,276.75 = 18,211.06/x
  3. Step 3: Cross multiply
    31,517.81x = 47,276.75 × 18,211.06
  4. Step 4: Simplify right side
    31,517.81x = 860,959,730.86
  5. Step 5: Solve for x
    x = 860,959,730.86/31,517.81
  6. Step 6: Final answer
    x = 27,316.61

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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.