Home / 28,087.73-38,761.37-15,341.28

Finding the Fourth Proportional to 28,087.73, 38,761.37 and 15,341.28

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Solution

The fourth proportional to 28,087.73, 38,761.37 and 15,341.28 is: 21,171.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.73 : 38,761.37 = 15,341.28 : x
  2. Step 2: Convert to fraction form
    28,087.73/38,761.37 = 15,341.28/x
  3. Step 3: Cross multiply
    28,087.73x = 38,761.37 × 15,341.28
  4. Step 4: Simplify right side
    28,087.73x = 594,648,953.65
  5. Step 5: Solve for x
    x = 594,648,953.65/28,087.73
  6. Step 6: Final answer
    x = 21,171.13

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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.