Home / 12,808.38-17,678.80-7,222.62

Finding the Fourth Proportional to 12,808.38, 17,678.80 and 7,222.62

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Solution

The fourth proportional to 12,808.38, 17,678.80 and 7,222.62 is: 9,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.38 : 17,678.80 = 7,222.62 : x
  2. Step 2: Convert to fraction form
    12,808.38/17,678.80 = 7,222.62/x
  3. Step 3: Cross multiply
    12,808.38x = 17,678.80 × 7,222.62
  4. Step 4: Simplify right side
    12,808.38x = 127,687,254.46
  5. Step 5: Solve for x
    x = 127,687,254.46/12,808.38
  6. Step 6: Final answer
    x = 9,969.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.