Home / 15,291.12-21,073.17-11,928.60

Finding the Fourth Proportional to 15,291.12, 21,073.17 and 11,928.60

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Solution

The fourth proportional to 15,291.12, 21,073.17 and 11,928.60 is: 16,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.12 : 21,073.17 = 11,928.60 : x
  2. Step 2: Convert to fraction form
    15,291.12/21,073.17 = 11,928.60/x
  3. Step 3: Cross multiply
    15,291.12x = 21,073.17 × 11,928.60
  4. Step 4: Simplify right side
    15,291.12x = 251,373,415.66
  5. Step 5: Solve for x
    x = 251,373,415.66/15,291.12
  6. Step 6: Final answer
    x = 16,439.18

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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.