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Finding the Fourth Proportional to 12,975.61, 17,910.57 and 9,617.35

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Solution

The fourth proportional to 12,975.61, 17,910.57 and 9,617.35 is: 13,275.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.61 : 17,910.57 = 9,617.35 : x
  2. Step 2: Convert to fraction form
    12,975.61/17,910.57 = 9,617.35/x
  3. Step 3: Cross multiply
    12,975.61x = 17,910.57 × 9,617.35
  4. Step 4: Simplify right side
    12,975.61x = 172,252,220.39
  5. Step 5: Solve for x
    x = 172,252,220.39/12,975.61
  6. Step 6: Final answer
    x = 13,275.08

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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.