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Finding the Fourth Proportional to 12,853.03, 17,737.48 and 7,187.64

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Solution

The fourth proportional to 12,853.03, 17,737.48 and 7,187.64 is: 9,919.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,853.03 : 17,737.48 = 7,187.64 : x
  2. Step 2: Convert to fraction form
    12,853.03/17,737.48 = 7,187.64/x
  3. Step 3: Cross multiply
    12,853.03x = 17,737.48 × 7,187.64
  4. Step 4: Simplify right side
    12,853.03x = 127,490,563.22
  5. Step 5: Solve for x
    x = 127,490,563.22/12,853.03
  6. Step 6: Final answer
    x = 9,919.11

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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.