Home / 15,565.27-21,480.68-8,851.51

Finding the Fourth Proportional to 15,565.27, 21,480.68 and 8,851.51

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Solution

The fourth proportional to 15,565.27, 21,480.68 and 8,851.51 is: 12,215.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.27 : 21,480.68 = 8,851.51 : x
  2. Step 2: Convert to fraction form
    15,565.27/21,480.68 = 8,851.51/x
  3. Step 3: Cross multiply
    15,565.27x = 21,480.68 × 8,851.51
  4. Step 4: Simplify right side
    15,565.27x = 190,136,453.83
  5. Step 5: Solve for x
    x = 190,136,453.83/15,565.27
  6. Step 6: Final answer
    x = 12,215.43

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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.