Home / 15,928.11-21,977.19-9,213.57

Finding the Fourth Proportional to 15,928.11, 21,977.19 and 9,213.57

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Solution

The fourth proportional to 15,928.11, 21,977.19 and 9,213.57 is: 12,712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.11 : 21,977.19 = 9,213.57 : x
  2. Step 2: Convert to fraction form
    15,928.11/21,977.19 = 9,213.57/x
  3. Step 3: Cross multiply
    15,928.11x = 21,977.19 × 9,213.57
  4. Step 4: Simplify right side
    15,928.11x = 202,488,378.47
  5. Step 5: Solve for x
    x = 202,488,378.47/15,928.11
  6. Step 6: Final answer
    x = 12,712.64

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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.