Home / 21,780.06-32,677.38-8,636.22

Finding the Fourth Proportional to 21,780.06, 32,677.38 and 8,636.22

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Solution

The fourth proportional to 21,780.06, 32,677.38 and 8,636.22 is: 12,957.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.06 : 32,677.38 = 8,636.22 : x
  2. Step 2: Convert to fraction form
    21,780.06/32,677.38 = 8,636.22/x
  3. Step 3: Cross multiply
    21,780.06x = 32,677.38 × 8,636.22
  4. Step 4: Simplify right side
    21,780.06x = 282,209,042.70
  5. Step 5: Solve for x
    x = 282,209,042.70/21,780.06
  6. Step 6: Final answer
    x = 12,957.22

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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.