Home / 12,742.40-17,583.91-7,077.51

Finding the Fourth Proportional to 12,742.40, 17,583.91 and 7,077.51

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Solution

The fourth proportional to 12,742.40, 17,583.91 and 7,077.51 is: 9,766.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.40 : 17,583.91 = 7,077.51 : x
  2. Step 2: Convert to fraction form
    12,742.40/17,583.91 = 7,077.51/x
  3. Step 3: Cross multiply
    12,742.40x = 17,583.91 × 7,077.51
  4. Step 4: Simplify right side
    12,742.40x = 124,450,281.17
  5. Step 5: Solve for x
    x = 124,450,281.17/12,742.40
  6. Step 6: Final answer
    x = 9,766.63

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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.