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Finding the Fourth Proportional to 12,587, 17,370.06 and 6,999.08

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Solution

The fourth proportional to 12,587, 17,370.06 and 6,999.08 is: 9,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587 : 17,370.06 = 6,999.08 : x
  2. Step 2: Convert to fraction form
    12,587/17,370.06 = 6,999.08/x
  3. Step 3: Cross multiply
    12,587x = 17,370.06 × 6,999.08
  4. Step 4: Simplify right side
    12,587x = 121,574,439.54
  5. Step 5: Solve for x
    x = 121,574,439.54/12,587
  6. Step 6: Final answer
    x = 9,658.73

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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.