Home / 13,287.40-19,918.30-10,324.20

Finding the Fourth Proportional to 13,287.40, 19,918.30 and 10,324.20

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Solution

The fourth proportional to 13,287.40, 19,918.30 and 10,324.20 is: 15,476.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.40 : 19,918.30 = 10,324.20 : x
  2. Step 2: Convert to fraction form
    13,287.40/19,918.30 = 10,324.20/x
  3. Step 3: Cross multiply
    13,287.40x = 19,918.30 × 10,324.20
  4. Step 4: Simplify right side
    13,287.40x = 205,640,512.86
  5. Step 5: Solve for x
    x = 205,640,512.86/13,287.40
  6. Step 6: Final answer
    x = 15,476.35

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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.