Home / 31,564.19-43,559.87-18,139.65

Finding the Fourth Proportional to 31,564.19, 43,559.87 and 18,139.65

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Solution

The fourth proportional to 31,564.19, 43,559.87 and 18,139.65 is: 25,033.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.19 : 43,559.87 = 18,139.65 : x
  2. Step 2: Convert to fraction form
    31,564.19/43,559.87 = 18,139.65/x
  3. Step 3: Cross multiply
    31,564.19x = 43,559.87 × 18,139.65
  4. Step 4: Simplify right side
    31,564.19x = 790,160,705.15
  5. Step 5: Solve for x
    x = 790,160,705.15/31,564.19
  6. Step 6: Final answer
    x = 25,033.46

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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.