Home / 21,862.26-30,170.34-12,431.16

Finding the Fourth Proportional to 21,862.26, 30,170.34 and 12,431.16

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Solution

The fourth proportional to 21,862.26, 30,170.34 and 12,431.16 is: 17,155.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.26 : 30,170.34 = 12,431.16 : x
  2. Step 2: Convert to fraction form
    21,862.26/30,170.34 = 12,431.16/x
  3. Step 3: Cross multiply
    21,862.26x = 30,170.34 × 12,431.16
  4. Step 4: Simplify right side
    21,862.26x = 375,052,323.79
  5. Step 5: Solve for x
    x = 375,052,323.79/21,862.26
  6. Step 6: Final answer
    x = 17,155.24

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Half scale
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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.