Home / 22,565.68-31,111.77-15,479.80

Finding the Fourth Proportional to 22,565.68, 31,111.77 and 15,479.80

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Solution

The fourth proportional to 22,565.68, 31,111.77 and 15,479.80 is: 21,342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,565.68 : 31,111.77 = 15,479.80 : x
  2. Step 2: Convert to fraction form
    22,565.68/31,111.77 = 15,479.80/x
  3. Step 3: Cross multiply
    22,565.68x = 31,111.77 × 15,479.80
  4. Step 4: Simplify right side
    22,565.68x = 481,603,977.25
  5. Step 5: Solve for x
    x = 481,603,977.25/22,565.68
  6. Step 6: Final answer
    x = 21,342.32

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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.