Home / 31,340.20-47,010.30-18,898.60

Finding the Fourth Proportional to 31,340.20, 47,010.30 and 18,898.60

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Solution

The fourth proportional to 31,340.20, 47,010.30 and 18,898.60 is: 28,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,340.20 : 47,010.30 = 18,898.60 : x
  2. Step 2: Convert to fraction form
    31,340.20/47,010.30 = 18,898.60/x
  3. Step 3: Cross multiply
    31,340.20x = 47,010.30 × 18,898.60
  4. Step 4: Simplify right side
    31,340.20x = 888,428,855.58
  5. Step 5: Solve for x
    x = 888,428,855.58/31,340.20
  6. Step 6: Final answer
    x = 28,347.90

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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.