Home / 28,179.38-38,888.75-15,604.13

Finding the Fourth Proportional to 28,179.38, 38,888.75 and 15,604.13

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Solution

The fourth proportional to 28,179.38, 38,888.75 and 15,604.13 is: 21,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.38 : 38,888.75 = 15,604.13 : x
  2. Step 2: Convert to fraction form
    28,179.38/38,888.75 = 15,604.13/x
  3. Step 3: Cross multiply
    28,179.38x = 38,888.75 × 15,604.13
  4. Step 4: Simplify right side
    28,179.38x = 606,824,955.10
  5. Step 5: Solve for x
    x = 606,824,955.10/28,179.38
  6. Step 6: Final answer
    x = 21,534.37

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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.