Home / 28,112.31-38,793.47-15,536.25

Finding the Fourth Proportional to 28,112.31, 38,793.47 and 15,536.25

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Solution

The fourth proportional to 28,112.31, 38,793.47 and 15,536.25 is: 21,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.31 : 38,793.47 = 15,536.25 : x
  2. Step 2: Convert to fraction form
    28,112.31/38,793.47 = 15,536.25/x
  3. Step 3: Cross multiply
    28,112.31x = 38,793.47 × 15,536.25
  4. Step 4: Simplify right side
    28,112.31x = 602,704,970.61
  5. Step 5: Solve for x
    x = 602,704,970.61/28,112.31
  6. Step 6: Final answer
    x = 21,439.18

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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.