Home / 31,814.48-43,910.43-18,386.30

Finding the Fourth Proportional to 31,814.48, 43,910.43 and 18,386.30

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Solution

The fourth proportional to 31,814.48, 43,910.43 and 18,386.30 is: 25,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.48 : 43,910.43 = 18,386.30 : x
  2. Step 2: Convert to fraction form
    31,814.48/43,910.43 = 18,386.30/x
  3. Step 3: Cross multiply
    31,814.48x = 43,910.43 × 18,386.30
  4. Step 4: Simplify right side
    31,814.48x = 807,350,339.11
  5. Step 5: Solve for x
    x = 807,350,339.11/31,814.48
  6. Step 6: Final answer
    x = 25,376.82

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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.