Home / 12,619.80-17,417-7,244.36

Finding the Fourth Proportional to 12,619.80, 17,417 and 7,244.36

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Solution

The fourth proportional to 12,619.80, 17,417 and 7,244.36 is: 9,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.80 : 17,417 = 7,244.36 : x
  2. Step 2: Convert to fraction form
    12,619.80/17,417 = 7,244.36/x
  3. Step 3: Cross multiply
    12,619.80x = 17,417 × 7,244.36
  4. Step 4: Simplify right side
    12,619.80x = 126,175,018.12
  5. Step 5: Solve for x
    x = 126,175,018.12/12,619.80
  6. Step 6: Final answer
    x = 9,998.18

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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.