Home / 21,436.28-32,159.40-6,644.42

Finding the Fourth Proportional to 21,436.28, 32,159.40 and 6,644.42

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Solution

The fourth proportional to 21,436.28, 32,159.40 and 6,644.42 is: 9,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.28 : 32,159.40 = 6,644.42 : x
  2. Step 2: Convert to fraction form
    21,436.28/32,159.40 = 6,644.42/x
  3. Step 3: Cross multiply
    21,436.28x = 32,159.40 × 6,644.42
  4. Step 4: Simplify right side
    21,436.28x = 213,680,560.55
  5. Step 5: Solve for x
    x = 213,680,560.55/21,436.28
  6. Step 6: Final answer
    x = 9,968.17

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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.