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Finding the Fourth Proportional to 12,398.94, 17,108.40 and 7,094.15

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Solution

The fourth proportional to 12,398.94, 17,108.40 and 7,094.15 is: 9,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.94 : 17,108.40 = 7,094.15 : x
  2. Step 2: Convert to fraction form
    12,398.94/17,108.40 = 7,094.15/x
  3. Step 3: Cross multiply
    12,398.94x = 17,108.40 × 7,094.15
  4. Step 4: Simplify right side
    12,398.94x = 121,369,470.32
  5. Step 5: Solve for x
    x = 121,369,470.32/12,398.94
  6. Step 6: Final answer
    x = 9,788.70

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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.