Home / 28,179.39-38,888.88-15,604.41

Finding the Fourth Proportional to 28,179.39, 38,888.88 and 15,604.41

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Solution

The fourth proportional to 28,179.39, 38,888.88 and 15,604.41 is: 21,534.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.39 : 38,888.88 = 15,604.41 : x
  2. Step 2: Convert to fraction form
    28,179.39/38,888.88 = 15,604.41/x
  3. Step 3: Cross multiply
    28,179.39x = 38,888.88 × 15,604.41
  4. Step 4: Simplify right side
    28,179.39x = 606,838,027.96
  5. Step 5: Solve for x
    x = 606,838,027.96/28,179.39
  6. Step 6: Final answer
    x = 21,534.82

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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.