Home / 19,702.36-27,178.68-13,320.55

Finding the Fourth Proportional to 19,702.36, 27,178.68 and 13,320.55

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Solution

The fourth proportional to 19,702.36, 27,178.68 and 13,320.55 is: 18,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,702.36 : 27,178.68 = 13,320.55 : x
  2. Step 2: Convert to fraction form
    19,702.36/27,178.68 = 13,320.55/x
  3. Step 3: Cross multiply
    19,702.36x = 27,178.68 × 13,320.55
  4. Step 4: Simplify right side
    19,702.36x = 362,034,965.87
  5. Step 5: Solve for x
    x = 362,034,965.87/19,702.36
  6. Step 6: Final answer
    x = 18,375.21

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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.