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Finding the Fourth Proportional to 13,670.72, 18,868.66 and 8,952.26

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Solution

The fourth proportional to 13,670.72, 18,868.66 and 8,952.26 is: 12,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.72 : 18,868.66 = 8,952.26 : x
  2. Step 2: Convert to fraction form
    13,670.72/18,868.66 = 8,952.26/x
  3. Step 3: Cross multiply
    13,670.72x = 18,868.66 × 8,952.26
  4. Step 4: Simplify right side
    13,670.72x = 168,917,150.17
  5. Step 5: Solve for x
    x = 168,917,150.17/13,670.72
  6. Step 6: Final answer
    x = 12,356.13

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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.