Home / 22,678.30-34,017.80-8,639.11

Finding the Fourth Proportional to 22,678.30, 34,017.80 and 8,639.11

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Solution

The fourth proportional to 22,678.30, 34,017.80 and 8,639.11 is: 12,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,678.30 : 34,017.80 = 8,639.11 : x
  2. Step 2: Convert to fraction form
    22,678.30/34,017.80 = 8,639.11/x
  3. Step 3: Cross multiply
    22,678.30x = 34,017.80 × 8,639.11
  4. Step 4: Simplify right side
    22,678.30x = 293,883,516.16
  5. Step 5: Solve for x
    x = 293,883,516.16/22,678.30
  6. Step 6: Final answer
    x = 12,958.80

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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.