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Finding the Fourth Proportional to 11,809.40, 17,714.10 and 9,908.60

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Solution

The fourth proportional to 11,809.40, 17,714.10 and 9,908.60 is: 14,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809.40 : 17,714.10 = 9,908.60 : x
  2. Step 2: Convert to fraction form
    11,809.40/17,714.10 = 9,908.60/x
  3. Step 3: Cross multiply
    11,809.40x = 17,714.10 × 9,908.60
  4. Step 4: Simplify right side
    11,809.40x = 175,521,931.26
  5. Step 5: Solve for x
    x = 175,521,931.26/11,809.40
  6. Step 6: Final answer
    x = 14,862.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.