Home / 15,933.18-21,985.38-9,217.48

Finding the Fourth Proportional to 15,933.18, 21,985.38 and 9,217.48

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Solution

The fourth proportional to 15,933.18, 21,985.38 and 9,217.48 is: 12,718.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.18 : 21,985.38 = 9,217.48 : x
  2. Step 2: Convert to fraction form
    15,933.18/21,985.38 = 9,217.48/x
  3. Step 3: Cross multiply
    15,933.18x = 21,985.38 × 9,217.48
  4. Step 4: Simplify right side
    15,933.18x = 202,649,800.44
  5. Step 5: Solve for x
    x = 202,649,800.44/15,933.18
  6. Step 6: Final answer
    x = 12,718.73

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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.