Home / 12,936.78-17,848.80-7,629.66

Finding the Fourth Proportional to 12,936.78, 17,848.80 and 7,629.66

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Solution

The fourth proportional to 12,936.78, 17,848.80 and 7,629.66 is: 10,526.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.78 : 17,848.80 = 7,629.66 : x
  2. Step 2: Convert to fraction form
    12,936.78/17,848.80 = 7,629.66/x
  3. Step 3: Cross multiply
    12,936.78x = 17,848.80 × 7,629.66
  4. Step 4: Simplify right side
    12,936.78x = 136,180,275.41
  5. Step 5: Solve for x
    x = 136,180,275.41/12,936.78
  6. Step 6: Final answer
    x = 10,526.60

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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.