Home / 13,758.66-18,987.35-7,791.26

Finding the Fourth Proportional to 13,758.66, 18,987.35 and 7,791.26

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Solution

The fourth proportional to 13,758.66, 18,987.35 and 7,791.26 is: 10,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.66 : 18,987.35 = 7,791.26 : x
  2. Step 2: Convert to fraction form
    13,758.66/18,987.35 = 7,791.26/x
  3. Step 3: Cross multiply
    13,758.66x = 18,987.35 × 7,791.26
  4. Step 4: Simplify right side
    13,758.66x = 147,935,246.67
  5. Step 5: Solve for x
    x = 147,935,246.67/13,758.66
  6. Step 6: Final answer
    x = 10,752.16

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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.