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Finding the Fourth Proportional to 21,570.67, 32,356.03 and 6,780.88

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Solution

The fourth proportional to 21,570.67, 32,356.03 and 6,780.88 is: 10,171.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.67 : 32,356.03 = 6,780.88 : x
  2. Step 2: Convert to fraction form
    21,570.67/32,356.03 = 6,780.88/x
  3. Step 3: Cross multiply
    21,570.67x = 32,356.03 × 6,780.88
  4. Step 4: Simplify right side
    21,570.67x = 219,402,339.75
  5. Step 5: Solve for x
    x = 219,402,339.75/21,570.67
  6. Step 6: Final answer
    x = 10,171.33

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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.