Home / 12,918.26-19,457.18-12,296.18

Finding the Fourth Proportional to 12,918.26, 19,457.18 and 12,296.18

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Solution

The fourth proportional to 12,918.26, 19,457.18 and 12,296.18 is: 18,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.26 : 19,457.18 = 12,296.18 : x
  2. Step 2: Convert to fraction form
    12,918.26/19,457.18 = 12,296.18/x
  3. Step 3: Cross multiply
    12,918.26x = 19,457.18 × 12,296.18
  4. Step 4: Simplify right side
    12,918.26x = 239,248,987.57
  5. Step 5: Solve for x
    x = 239,248,987.57/12,918.26
  6. Step 6: Final answer
    x = 18,520.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.