Home / 21,877.20-32,767.20-17,989.20

Finding the Fourth Proportional to 21,877.20, 32,767.20 and 17,989.20

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Solution

The fourth proportional to 21,877.20, 32,767.20 and 17,989.20 is: 26,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.20 : 32,767.20 = 17,989.20 : x
  2. Step 2: Convert to fraction form
    21,877.20/32,767.20 = 17,989.20/x
  3. Step 3: Cross multiply
    21,877.20x = 32,767.20 × 17,989.20
  4. Step 4: Simplify right side
    21,877.20x = 589,455,714.24
  5. Step 5: Solve for x
    x = 589,455,714.24/21,877.20
  6. Step 6: Final answer
    x = 26,943.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.