Home / 12,416.80-17,135.19-7,111.63

Finding the Fourth Proportional to 12,416.80, 17,135.19 and 7,111.63

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Solution

The fourth proportional to 12,416.80, 17,135.19 and 7,111.63 is: 9,814.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.80 : 17,135.19 = 7,111.63 : x
  2. Step 2: Convert to fraction form
    12,416.80/17,135.19 = 7,111.63/x
  3. Step 3: Cross multiply
    12,416.80x = 17,135.19 × 7,111.63
  4. Step 4: Simplify right side
    12,416.80x = 121,859,131.26
  5. Step 5: Solve for x
    x = 121,859,131.26/12,416.80
  6. Step 6: Final answer
    x = 9,814.05

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Double scale
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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.