Home / 28,291.71-39,068.82-18,243.66

Finding the Fourth Proportional to 28,291.71, 39,068.82 and 18,243.66

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Solution

The fourth proportional to 28,291.71, 39,068.82 and 18,243.66 is: 25,193.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.71 : 39,068.82 = 18,243.66 : x
  2. Step 2: Convert to fraction form
    28,291.71/39,068.82 = 18,243.66/x
  3. Step 3: Cross multiply
    28,291.71x = 39,068.82 × 18,243.66
  4. Step 4: Simplify right side
    28,291.71x = 712,758,268.68
  5. Step 5: Solve for x
    x = 712,758,268.68/28,291.71
  6. Step 6: Final answer
    x = 25,193.18

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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.