Home / 12,359.31-17,048.18-8,110.65

Finding the Fourth Proportional to 12,359.31, 17,048.18 and 8,110.65

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Solution

The fourth proportional to 12,359.31, 17,048.18 and 8,110.65 is: 11,187.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.31 : 17,048.18 = 8,110.65 : x
  2. Step 2: Convert to fraction form
    12,359.31/17,048.18 = 8,110.65/x
  3. Step 3: Cross multiply
    12,359.31x = 17,048.18 × 8,110.65
  4. Step 4: Simplify right side
    12,359.31x = 138,271,780.56
  5. Step 5: Solve for x
    x = 138,271,780.56/12,359.31
  6. Step 6: Final answer
    x = 11,187.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.