Home / 15,929.32-21,982.02-8,855.24

Finding the Fourth Proportional to 15,929.32, 21,982.02 and 8,855.24

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Solution

The fourth proportional to 15,929.32, 21,982.02 and 8,855.24 is: 12,219.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.32 : 21,982.02 = 8,855.24 : x
  2. Step 2: Convert to fraction form
    15,929.32/21,982.02 = 8,855.24/x
  3. Step 3: Cross multiply
    15,929.32x = 21,982.02 × 8,855.24
  4. Step 4: Simplify right side
    15,929.32x = 194,656,062.78
  5. Step 5: Solve for x
    x = 194,656,062.78/15,929.32
  6. Step 6: Final answer
    x = 12,219.99

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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.