Home / 12,239.72-18,358.92-8,292.62

Finding the Fourth Proportional to 12,239.72, 18,358.92 and 8,292.62

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Solution

The fourth proportional to 12,239.72, 18,358.92 and 8,292.62 is: 12,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.72 : 18,358.92 = 8,292.62 : x
  2. Step 2: Convert to fraction form
    12,239.72/18,358.92 = 8,292.62/x
  3. Step 3: Cross multiply
    12,239.72x = 18,358.92 × 8,292.62
  4. Step 4: Simplify right side
    12,239.72x = 152,243,547.17
  5. Step 5: Solve for x
    x = 152,243,547.17/12,239.72
  6. Step 6: Final answer
    x = 12,438.48

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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.