Home / 12,439.08-17,162.52-8,658

Finding the Fourth Proportional to 12,439.08, 17,162.52 and 8,658

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Solution

The fourth proportional to 12,439.08, 17,162.52 and 8,658 is: 11,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.08 : 17,162.52 = 8,658 : x
  2. Step 2: Convert to fraction form
    12,439.08/17,162.52 = 8,658/x
  3. Step 3: Cross multiply
    12,439.08x = 17,162.52 × 8,658
  4. Step 4: Simplify right side
    12,439.08x = 148,593,098.16
  5. Step 5: Solve for x
    x = 148,593,098.16/12,439.08
  6. Step 6: Final answer
    x = 11,945.67

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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.