Home / 31,860.60-43,964.55-18,429.18

Finding the Fourth Proportional to 31,860.60, 43,964.55 and 18,429.18

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Solution

The fourth proportional to 31,860.60, 43,964.55 and 18,429.18 is: 25,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,860.60 : 43,964.55 = 18,429.18 : x
  2. Step 2: Convert to fraction form
    31,860.60/43,964.55 = 18,429.18/x
  3. Step 3: Cross multiply
    31,860.60x = 43,964.55 × 18,429.18
  4. Step 4: Simplify right side
    31,860.60x = 810,230,605.57
  5. Step 5: Solve for x
    x = 810,230,605.57/31,860.60
  6. Step 6: Final answer
    x = 25,430.49

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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.