Home / 15,330.33-21,157.82-9,360.74

Finding the Fourth Proportional to 15,330.33, 21,157.82 and 9,360.74

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Solution

The fourth proportional to 15,330.33, 21,157.82 and 9,360.74 is: 12,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.33 : 21,157.82 = 9,360.74 : x
  2. Step 2: Convert to fraction form
    15,330.33/21,157.82 = 9,360.74/x
  3. Step 3: Cross multiply
    15,330.33x = 21,157.82 × 9,360.74
  4. Step 4: Simplify right side
    15,330.33x = 198,052,851.99
  5. Step 5: Solve for x
    x = 198,052,851.99/15,330.33
  6. Step 6: Final answer
    x = 12,919.02

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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.