Home / 28,807.18-39,761.31-18,760.66

Finding the Fourth Proportional to 28,807.18, 39,761.31 and 18,760.66

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Solution

The fourth proportional to 28,807.18, 39,761.31 and 18,760.66 is: 25,894.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.18 : 39,761.31 = 18,760.66 : x
  2. Step 2: Convert to fraction form
    28,807.18/39,761.31 = 18,760.66/x
  3. Step 3: Cross multiply
    28,807.18x = 39,761.31 × 18,760.66
  4. Step 4: Simplify right side
    28,807.18x = 745,948,418.06
  5. Step 5: Solve for x
    x = 745,948,418.06/28,807.18
  6. Step 6: Final answer
    x = 25,894.53

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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.