Home / 12,777.39-17,632.80-7,112.02

Finding the Fourth Proportional to 12,777.39, 17,632.80 and 7,112.02

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Solution

The fourth proportional to 12,777.39, 17,632.80 and 7,112.02 is: 9,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.39 : 17,632.80 = 7,112.02 : x
  2. Step 2: Convert to fraction form
    12,777.39/17,632.80 = 7,112.02/x
  3. Step 3: Cross multiply
    12,777.39x = 17,632.80 × 7,112.02
  4. Step 4: Simplify right side
    12,777.39x = 125,404,702.53
  5. Step 5: Solve for x
    x = 125,404,702.53/12,777.39
  6. Step 6: Final answer
    x = 9,814.58

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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.