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Finding the Fourth Proportional to 12,652.89, 17,461.08 and 6,987.48

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Solution

The fourth proportional to 12,652.89, 17,461.08 and 6,987.48 is: 9,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.89 : 17,461.08 = 6,987.48 : x
  2. Step 2: Convert to fraction form
    12,652.89/17,461.08 = 6,987.48/x
  3. Step 3: Cross multiply
    12,652.89x = 17,461.08 × 6,987.48
  4. Step 4: Simplify right side
    12,652.89x = 122,008,947.28
  5. Step 5: Solve for x
    x = 122,008,947.28/12,652.89
  6. Step 6: Final answer
    x = 9,642.77

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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.