Home / 15,342.08-21,173.66-9,377.72

Finding the Fourth Proportional to 15,342.08, 21,173.66 and 9,377.72

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Solution

The fourth proportional to 15,342.08, 21,173.66 and 9,377.72 is: 12,942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.08 : 21,173.66 = 9,377.72 : x
  2. Step 2: Convert to fraction form
    15,342.08/21,173.66 = 9,377.72/x
  3. Step 3: Cross multiply
    15,342.08x = 21,173.66 × 9,377.72
  4. Step 4: Simplify right side
    15,342.08x = 198,560,572.43
  5. Step 5: Solve for x
    x = 198,560,572.43/15,342.08
  6. Step 6: Final answer
    x = 12,942.22

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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.