Home / 21,678.24-32,520.12-6,881.88

Finding the Fourth Proportional to 21,678.24, 32,520.12 and 6,881.88

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Solution

The fourth proportional to 21,678.24, 32,520.12 and 6,881.88 is: 10,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,678.24 : 32,520.12 = 6,881.88 : x
  2. Step 2: Convert to fraction form
    21,678.24/32,520.12 = 6,881.88/x
  3. Step 3: Cross multiply
    21,678.24x = 32,520.12 × 6,881.88
  4. Step 4: Simplify right side
    21,678.24x = 223,799,563.43
  5. Step 5: Solve for x
    x = 223,799,563.43/21,678.24
  6. Step 6: Final answer
    x = 10,323.70

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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.