Home / 28,534.80-39,378-15,959.56

Finding the Fourth Proportional to 28,534.80, 39,378 and 15,959.56

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Solution

The fourth proportional to 28,534.80, 39,378 and 15,959.56 is: 22,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534.80 : 39,378 = 15,959.56 : x
  2. Step 2: Convert to fraction form
    28,534.80/39,378 = 15,959.56/x
  3. Step 3: Cross multiply
    28,534.80x = 39,378 × 15,959.56
  4. Step 4: Simplify right side
    28,534.80x = 628,455,553.68
  5. Step 5: Solve for x
    x = 628,455,553.68/28,534.80
  6. Step 6: Final answer
    x = 22,024.18

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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.