Home / 28,191.35-38,902.66-15,444.58

Finding the Fourth Proportional to 28,191.35, 38,902.66 and 15,444.58

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Solution

The fourth proportional to 28,191.35, 38,902.66 and 15,444.58 is: 21,312.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.35 : 38,902.66 = 15,444.58 : x
  2. Step 2: Convert to fraction form
    28,191.35/38,902.66 = 15,444.58/x
  3. Step 3: Cross multiply
    28,191.35x = 38,902.66 × 15,444.58
  4. Step 4: Simplify right side
    28,191.35x = 600,835,244.58
  5. Step 5: Solve for x
    x = 600,835,244.58/28,191.35
  6. Step 6: Final answer
    x = 21,312.75

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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.