Home / 28,180.19-38,888.66-15,604.94

Finding the Fourth Proportional to 28,180.19, 38,888.66 and 15,604.94

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Solution

The fourth proportional to 28,180.19, 38,888.66 and 15,604.94 is: 21,534.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.19 : 38,888.66 = 15,604.94 : x
  2. Step 2: Convert to fraction form
    28,180.19/38,888.66 = 15,604.94/x
  3. Step 3: Cross multiply
    28,180.19x = 38,888.66 × 15,604.94
  4. Step 4: Simplify right side
    28,180.19x = 606,855,205.98
  5. Step 5: Solve for x
    x = 606,855,205.98/28,180.19
  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.