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Finding the Fourth Proportional to 21,892.84, 32,793.18 and 10,215.40

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Solution

The fourth proportional to 21,892.84, 32,793.18 and 10,215.40 is: 15,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,892.84 : 32,793.18 = 10,215.40 : x
  2. Step 2: Convert to fraction form
    21,892.84/32,793.18 = 10,215.40/x
  3. Step 3: Cross multiply
    21,892.84x = 32,793.18 × 10,215.40
  4. Step 4: Simplify right side
    21,892.84x = 334,995,450.97
  5. Step 5: Solve for x
    x = 334,995,450.97/21,892.84
  6. Step 6: Final answer
    x = 15,301.60

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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.