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Finding the Fourth Proportional to 21,338.80, 32,010.60 and 6,547.60

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Solution

The fourth proportional to 21,338.80, 32,010.60 and 6,547.60 is: 9,822.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.80 : 32,010.60 = 6,547.60 : x
  2. Step 2: Convert to fraction form
    21,338.80/32,010.60 = 6,547.60/x
  3. Step 3: Cross multiply
    21,338.80x = 32,010.60 × 6,547.60
  4. Step 4: Simplify right side
    21,338.80x = 209,592,604.56
  5. Step 5: Solve for x
    x = 209,592,604.56/21,338.80
  6. Step 6: Final answer
    x = 9,822.14

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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.