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Finding the Fourth Proportional to 17,154.80, 25,746.60 and 7,809.20

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Solution

The fourth proportional to 17,154.80, 25,746.60 and 7,809.20 is: 11,720.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,154.80 : 25,746.60 = 7,809.20 : x
  2. Step 2: Convert to fraction form
    17,154.80/25,746.60 = 7,809.20/x
  3. Step 3: Cross multiply
    17,154.80x = 25,746.60 × 7,809.20
  4. Step 4: Simplify right side
    17,154.80x = 201,060,348.72
  5. Step 5: Solve for x
    x = 201,060,348.72/17,154.80
  6. Step 6: Final answer
    x = 11,720.36

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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.