Home / 10,147.74-13,987.14-6,789.36

Finding the Fourth Proportional to 10,147.74, 13,987.14 and 6,789.36

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Solution

The fourth proportional to 10,147.74, 13,987.14 and 6,789.36 is: 9,358.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.74 : 13,987.14 = 6,789.36 : x
  2. Step 2: Convert to fraction form
    10,147.74/13,987.14 = 6,789.36/x
  3. Step 3: Cross multiply
    10,147.74x = 13,987.14 × 6,789.36
  4. Step 4: Simplify right side
    10,147.74x = 94,963,728.83
  5. Step 5: Solve for x
    x = 94,963,728.83/10,147.74
  6. Step 6: Final answer
    x = 9,358.12

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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.