Home / 28,290.42-38,951.28-21,554.46

Finding the Fourth Proportional to 28,290.42, 38,951.28 and 21,554.46

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Solution

The fourth proportional to 28,290.42, 38,951.28 and 21,554.46 is: 29,676.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.42 : 38,951.28 = 21,554.46 : x
  2. Step 2: Convert to fraction form
    28,290.42/38,951.28 = 21,554.46/x
  3. Step 3: Cross multiply
    28,290.42x = 38,951.28 × 21,554.46
  4. Step 4: Simplify right side
    28,290.42x = 839,573,806.71
  5. Step 5: Solve for x
    x = 839,573,806.71/28,290.42
  6. Step 6: Final answer
    x = 29,676.97

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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.