Home / 18,973.20-28,474.32-12,397.56

Finding the Fourth Proportional to 18,973.20, 28,474.32 and 12,397.56

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Solution

The fourth proportional to 18,973.20, 28,474.32 and 12,397.56 is: 18,605.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.20 : 28,474.32 = 12,397.56 : x
  2. Step 2: Convert to fraction form
    18,973.20/28,474.32 = 12,397.56/x
  3. Step 3: Cross multiply
    18,973.20x = 28,474.32 × 12,397.56
  4. Step 4: Simplify right side
    18,973.20x = 353,012,090.66
  5. Step 5: Solve for x
    x = 353,012,090.66/18,973.20
  6. Step 6: Final answer
    x = 18,605.83

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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.