Home / 28,178.94-38,868.18-21,449.46

Finding the Fourth Proportional to 28,178.94, 38,868.18 and 21,449.46

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Solution

The fourth proportional to 28,178.94, 38,868.18 and 21,449.46 is: 29,585.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.94 : 38,868.18 = 21,449.46 : x
  2. Step 2: Convert to fraction form
    28,178.94/38,868.18 = 21,449.46/x
  3. Step 3: Cross multiply
    28,178.94x = 38,868.18 × 21,449.46
  4. Step 4: Simplify right side
    28,178.94x = 833,701,472.18
  5. Step 5: Solve for x
    x = 833,701,472.18/28,178.94
  6. Step 6: Final answer
    x = 29,585.98

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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.