Home / 12,621.52-17,418-7,032.88

Finding the Fourth Proportional to 12,621.52, 17,418 and 7,032.88

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Solution

The fourth proportional to 12,621.52, 17,418 and 7,032.88 is: 9,705.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.52 : 17,418 = 7,032.88 : x
  2. Step 2: Convert to fraction form
    12,621.52/17,418 = 7,032.88/x
  3. Step 3: Cross multiply
    12,621.52x = 17,418 × 7,032.88
  4. Step 4: Simplify right side
    12,621.52x = 122,498,703.84
  5. Step 5: Solve for x
    x = 122,498,703.84/12,621.52
  6. Step 6: Final answer
    x = 9,705.54

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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.