Home / 31,650.13-43,681.71-18,220.06

Finding the Fourth Proportional to 31,650.13, 43,681.71 and 18,220.06

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Solution

The fourth proportional to 31,650.13, 43,681.71 and 18,220.06 is: 25,146.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,650.13 : 43,681.71 = 18,220.06 : x
  2. Step 2: Convert to fraction form
    31,650.13/43,681.71 = 18,220.06/x
  3. Step 3: Cross multiply
    31,650.13x = 43,681.71 × 18,220.06
  4. Step 4: Simplify right side
    31,650.13x = 795,883,377.10
  5. Step 5: Solve for x
    x = 795,883,377.10/31,650.13
  6. Step 6: Final answer
    x = 25,146.29

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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.