Home / 12,742.80-17,584.47-7,077.91

Finding the Fourth Proportional to 12,742.80, 17,584.47 and 7,077.91

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Solution

The fourth proportional to 12,742.80, 17,584.47 and 7,077.91 is: 9,767.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.80 : 17,584.47 = 7,077.91 : x
  2. Step 2: Convert to fraction form
    12,742.80/17,584.47 = 7,077.91/x
  3. Step 3: Cross multiply
    12,742.80x = 17,584.47 × 7,077.91
  4. Step 4: Simplify right side
    12,742.80x = 124,461,296.06
  5. Step 5: Solve for x
    x = 124,461,296.06/12,742.80
  6. Step 6: Final answer
    x = 9,767.19

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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.