Home / 31,490.50-47,188.14-18,996.64

Finding the Fourth Proportional to 31,490.50, 47,188.14 and 18,996.64

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Solution

The fourth proportional to 31,490.50, 47,188.14 and 18,996.64 is: 28,466.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490.50 : 47,188.14 = 18,996.64 : x
  2. Step 2: Convert to fraction form
    31,490.50/47,188.14 = 18,996.64/x
  3. Step 3: Cross multiply
    31,490.50x = 47,188.14 × 18,996.64
  4. Step 4: Simplify right side
    31,490.50x = 896,416,107.85
  5. Step 5: Solve for x
    x = 896,416,107.85/31,490.50
  6. Step 6: Final answer
    x = 28,466.24

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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.