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Finding the Fourth Proportional to 12,792.61, 17,659.29 and 8,603.29

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Solution

The fourth proportional to 12,792.61, 17,659.29 and 8,603.29 is: 11,876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.61 : 17,659.29 = 8,603.29 : x
  2. Step 2: Convert to fraction form
    12,792.61/17,659.29 = 8,603.29/x
  3. Step 3: Cross multiply
    12,792.61x = 17,659.29 × 8,603.29
  4. Step 4: Simplify right side
    12,792.61x = 151,927,993.06
  5. Step 5: Solve for x
    x = 151,927,993.06/12,792.61
  6. Step 6: Final answer
    x = 11,876.23

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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.