Home / 21,348.20-32,000.70-12,578.60

Finding the Fourth Proportional to 21,348.20, 32,000.70 and 12,578.60

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Solution

The fourth proportional to 21,348.20, 32,000.70 and 12,578.60 is: 18,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.20 : 32,000.70 = 12,578.60 : x
  2. Step 2: Convert to fraction form
    21,348.20/32,000.70 = 12,578.60/x
  3. Step 3: Cross multiply
    21,348.20x = 32,000.70 × 12,578.60
  4. Step 4: Simplify right side
    21,348.20x = 402,524,005.02
  5. Step 5: Solve for x
    x = 402,524,005.02/21,348.20
  6. Step 6: Final answer
    x = 18,855.17

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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.