Home / 15,934.08-21,989.28-8,860.80

Finding the Fourth Proportional to 15,934.08, 21,989.28 and 8,860.80

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Solution

The fourth proportional to 15,934.08, 21,989.28 and 8,860.80 is: 12,228.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.08 : 21,989.28 = 8,860.80 : x
  2. Step 2: Convert to fraction form
    15,934.08/21,989.28 = 8,860.80/x
  3. Step 3: Cross multiply
    15,934.08x = 21,989.28 × 8,860.80
  4. Step 4: Simplify right side
    15,934.08x = 194,842,612.22
  5. Step 5: Solve for x
    x = 194,842,612.22/15,934.08
  6. Step 6: Final answer
    x = 12,228.04

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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.