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Finding the Fourth Proportional to 12,574.80, 17,359.38 and 7,860.60

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Solution

The fourth proportional to 12,574.80, 17,359.38 and 7,860.60 is: 10,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.80 : 17,359.38 = 7,860.60 : x
  2. Step 2: Convert to fraction form
    12,574.80/17,359.38 = 7,860.60/x
  3. Step 3: Cross multiply
    12,574.80x = 17,359.38 × 7,860.60
  4. Step 4: Simplify right side
    12,574.80x = 136,455,142.43
  5. Step 5: Solve for x
    x = 136,455,142.43/12,574.80
  6. Step 6: Final answer
    x = 10,851.48

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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.