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Finding the Fourth Proportional to 17,127.80, 25,698.90 and 9,342.20

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Solution

The fourth proportional to 17,127.80, 25,698.90 and 9,342.20 is: 14,017.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,127.80 : 25,698.90 = 9,342.20 : x
  2. Step 2: Convert to fraction form
    17,127.80/25,698.90 = 9,342.20/x
  3. Step 3: Cross multiply
    17,127.80x = 25,698.90 × 9,342.20
  4. Step 4: Simplify right side
    17,127.80x = 240,084,263.58
  5. Step 5: Solve for x
    x = 240,084,263.58/17,127.80
  6. Step 6: Final answer
    x = 14,017.23

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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.