Home / 12,638.08-17,439.72-6,972.52

Finding the Fourth Proportional to 12,638.08, 17,439.72 and 6,972.52

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Solution

The fourth proportional to 12,638.08, 17,439.72 and 6,972.52 is: 9,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.08 : 17,439.72 = 6,972.52 : x
  2. Step 2: Convert to fraction form
    12,638.08/17,439.72 = 6,972.52/x
  3. Step 3: Cross multiply
    12,638.08x = 17,439.72 × 6,972.52
  4. Step 4: Simplify right side
    12,638.08x = 121,598,796.49
  5. Step 5: Solve for x
    x = 121,598,796.49/12,638.08
  6. Step 6: Final answer
    x = 9,621.62

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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.