Home / 15,565.50-21,477.96-8,851.41

Finding the Fourth Proportional to 15,565.50, 21,477.96 and 8,851.41

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Solution

The fourth proportional to 15,565.50, 21,477.96 and 8,851.41 is: 12,213.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.50 : 21,477.96 = 8,851.41 : x
  2. Step 2: Convert to fraction form
    15,565.50/21,477.96 = 8,851.41/x
  3. Step 3: Cross multiply
    15,565.50x = 21,477.96 × 8,851.41
  4. Step 4: Simplify right side
    15,565.50x = 190,110,229.92
  5. Step 5: Solve for x
    x = 190,110,229.92/15,565.50
  6. Step 6: Final answer
    x = 12,213.56

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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.