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Finding the Fourth Proportional to 12,652.52, 17,460.56 and 6,987.11

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Solution

The fourth proportional to 12,652.52, 17,460.56 and 6,987.11 is: 9,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.52 : 17,460.56 = 6,987.11 : x
  2. Step 2: Convert to fraction form
    12,652.52/17,460.56 = 6,987.11/x
  3. Step 3: Cross multiply
    12,652.52x = 17,460.56 × 6,987.11
  4. Step 4: Simplify right side
    12,652.52x = 121,998,783.55
  5. Step 5: Solve for x
    x = 121,998,783.55/12,652.52
  6. Step 6: Final answer
    x = 9,642.26

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Double scale
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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.