Home / 10,086.48-15,131.16-3,159.36

Finding the Fourth Proportional to 10,086.48, 15,131.16 and 3,159.36

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Solution

The fourth proportional to 10,086.48, 15,131.16 and 3,159.36 is: 4,739.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.48 : 15,131.16 = 3,159.36 : x
  2. Step 2: Convert to fraction form
    10,086.48/15,131.16 = 3,159.36/x
  3. Step 3: Cross multiply
    10,086.48x = 15,131.16 × 3,159.36
  4. Step 4: Simplify right side
    10,086.48x = 47,804,781.66
  5. Step 5: Solve for x
    x = 47,804,781.66/10,086.48
  6. Step 6: Final answer
    x = 4,739.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.