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Finding the Fourth Proportional to 21,996.90, 32,995.35 and 7,206.30

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Solution

The fourth proportional to 21,996.90, 32,995.35 and 7,206.30 is: 10,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.90 : 32,995.35 = 7,206.30 : x
  2. Step 2: Convert to fraction form
    21,996.90/32,995.35 = 7,206.30/x
  3. Step 3: Cross multiply
    21,996.90x = 32,995.35 × 7,206.30
  4. Step 4: Simplify right side
    21,996.90x = 237,774,390.71
  5. Step 5: Solve for x
    x = 237,774,390.71/21,996.90
  6. Step 6: Final answer
    x = 10,809.45

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Similar ratio
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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.