Home / 21,478.17-32,206.23-8,994.78

Finding the Fourth Proportional to 21,478.17, 32,206.23 and 8,994.78

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Solution

The fourth proportional to 21,478.17, 32,206.23 and 8,994.78 is: 13,487.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.17 : 32,206.23 = 8,994.78 : x
  2. Step 2: Convert to fraction form
    21,478.17/32,206.23 = 8,994.78/x
  3. Step 3: Cross multiply
    21,478.17x = 32,206.23 × 8,994.78
  4. Step 4: Simplify right side
    21,478.17x = 289,687,953.48
  5. Step 5: Solve for x
    x = 289,687,953.48/21,478.17
  6. Step 6: Final answer
    x = 13,487.55

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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.