Home / 20,073.32-27,702.16-12,115.40

Finding the Fourth Proportional to 20,073.32, 27,702.16 and 12,115.40

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Solution

The fourth proportional to 20,073.32, 27,702.16 and 12,115.40 is: 16,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.32 : 27,702.16 = 12,115.40 : x
  2. Step 2: Convert to fraction form
    20,073.32/27,702.16 = 12,115.40/x
  3. Step 3: Cross multiply
    20,073.32x = 27,702.16 × 12,115.40
  4. Step 4: Simplify right side
    20,073.32x = 335,622,749.26
  5. Step 5: Solve for x
    x = 335,622,749.26/20,073.32
  6. Step 6: Final answer
    x = 16,719.84

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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.