Home / 45,345.31-68,018.12-13,755.65

Finding the Fourth Proportional to 45,345.31, 68,018.12 and 13,755.65

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Solution

The fourth proportional to 45,345.31, 68,018.12 and 13,755.65 is: 20,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,345.31 : 68,018.12 = 13,755.65 : x
  2. Step 2: Convert to fraction form
    45,345.31/68,018.12 = 13,755.65/x
  3. Step 3: Cross multiply
    45,345.31x = 68,018.12 × 13,755.65
  4. Step 4: Simplify right side
    45,345.31x = 935,633,146.68
  5. Step 5: Solve for x
    x = 935,633,146.68/45,345.31
  6. Step 6: Final answer
    x = 20,633.52

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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.