Home / 28,891.06-39,868.40-18,141.50

Finding the Fourth Proportional to 28,891.06, 39,868.40 and 18,141.50

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Solution

The fourth proportional to 28,891.06, 39,868.40 and 18,141.50 is: 25,034.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.06 : 39,868.40 = 18,141.50 : x
  2. Step 2: Convert to fraction form
    28,891.06/39,868.40 = 18,141.50/x
  3. Step 3: Cross multiply
    28,891.06x = 39,868.40 × 18,141.50
  4. Step 4: Simplify right side
    28,891.06x = 723,272,723.62
  5. Step 5: Solve for x
    x = 723,272,723.62/28,891.06
  6. Step 6: Final answer
    x = 25,034.48

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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.