Home / 15,565.88-21,480.02-8,850.56

Finding the Fourth Proportional to 15,565.88, 21,480.02 and 8,850.56

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Solution

The fourth proportional to 15,565.88, 21,480.02 and 8,850.56 is: 12,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.88 : 21,480.02 = 8,850.56 : x
  2. Step 2: Convert to fraction form
    15,565.88/21,480.02 = 8,850.56/x
  3. Step 3: Cross multiply
    15,565.88x = 21,480.02 × 8,850.56
  4. Step 4: Simplify right side
    15,565.88x = 190,110,205.81
  5. Step 5: Solve for x
    x = 190,110,205.81/15,565.88
  6. Step 6: Final answer
    x = 12,213.26

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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.