Home / 15,370.88-21,207.20-9,396.72

Finding the Fourth Proportional to 15,370.88, 21,207.20 and 9,396.72

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Solution

The fourth proportional to 15,370.88, 21,207.20 and 9,396.72 is: 12,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.88 : 21,207.20 = 9,396.72 : x
  2. Step 2: Convert to fraction form
    15,370.88/21,207.20 = 9,396.72/x
  3. Step 3: Cross multiply
    15,370.88x = 21,207.20 × 9,396.72
  4. Step 4: Simplify right side
    15,370.88x = 199,278,073.40
  5. Step 5: Solve for x
    x = 199,278,073.40/15,370.88
  6. Step 6: Final answer
    x = 12,964.65

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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.