Home / 15,343.32-21,175.38-9,378.96

Finding the Fourth Proportional to 15,343.32, 21,175.38 and 9,378.96

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Solution

The fourth proportional to 15,343.32, 21,175.38 and 9,378.96 is: 12,943.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.32 : 21,175.38 = 9,378.96 : x
  2. Step 2: Convert to fraction form
    15,343.32/21,175.38 = 9,378.96/x
  3. Step 3: Cross multiply
    15,343.32x = 21,175.38 × 9,378.96
  4. Step 4: Simplify right side
    15,343.32x = 198,603,042.00
  5. Step 5: Solve for x
    x = 198,603,042.00/15,343.32
  6. Step 6: Final answer
    x = 12,943.94

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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.