Home / 31,564.60-43,561.26-18,140.20

Finding the Fourth Proportional to 31,564.60, 43,561.26 and 18,140.20

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Solution

The fourth proportional to 31,564.60, 43,561.26 and 18,140.20 is: 25,034.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.60 : 43,561.26 = 18,140.20 : x
  2. Step 2: Convert to fraction form
    31,564.60/43,561.26 = 18,140.20/x
  3. Step 3: Cross multiply
    31,564.60x = 43,561.26 × 18,140.20
  4. Step 4: Simplify right side
    31,564.60x = 790,209,968.65
  5. Step 5: Solve for x
    x = 790,209,968.65/31,564.60
  6. Step 6: Final answer
    x = 25,034.69

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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.