Home / 15,371.54-21,214.32-9,407.18

Finding the Fourth Proportional to 15,371.54, 21,214.32 and 9,407.18

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Solution

The fourth proportional to 15,371.54, 21,214.32 and 9,407.18 is: 12,982.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.54 : 21,214.32 = 9,407.18 : x
  2. Step 2: Convert to fraction form
    15,371.54/21,214.32 = 9,407.18/x
  3. Step 3: Cross multiply
    15,371.54x = 21,214.32 × 9,407.18
  4. Step 4: Simplify right side
    15,371.54x = 199,566,926.82
  5. Step 5: Solve for x
    x = 199,566,926.82/15,371.54
  6. Step 6: Final answer
    x = 12,982.88

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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.