Home / 12,370.70-18,570.45-7,445.90

Finding the Fourth Proportional to 12,370.70, 18,570.45 and 7,445.90

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Solution

The fourth proportional to 12,370.70, 18,570.45 and 7,445.90 is: 11,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,370.70 : 18,570.45 = 7,445.90 : x
  2. Step 2: Convert to fraction form
    12,370.70/18,570.45 = 7,445.90/x
  3. Step 3: Cross multiply
    12,370.70x = 18,570.45 × 7,445.90
  4. Step 4: Simplify right side
    12,370.70x = 138,273,713.66
  5. Step 5: Solve for x
    x = 138,273,713.66/12,370.70
  6. Step 6: Final answer
    x = 11,177.52

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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.