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Finding the Fourth Proportional to 12,937.44, 17,860.64 and 8,695.28

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Solution

The fourth proportional to 12,937.44, 17,860.64 and 8,695.28 is: 12,004.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.44 : 17,860.64 = 8,695.28 : x
  2. Step 2: Convert to fraction form
    12,937.44/17,860.64 = 8,695.28/x
  3. Step 3: Cross multiply
    12,937.44x = 17,860.64 × 8,695.28
  4. Step 4: Simplify right side
    12,937.44x = 155,303,265.78
  5. Step 5: Solve for x
    x = 155,303,265.78/12,937.44
  6. Step 6: Final answer
    x = 12,004.17

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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.