Home / 20,137.07-27,773.76-13,681.70

Finding the Fourth Proportional to 20,137.07, 27,773.76 and 13,681.70

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Solution

The fourth proportional to 20,137.07, 27,773.76 and 13,681.70 is: 18,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.07 : 27,773.76 = 13,681.70 : x
  2. Step 2: Convert to fraction form
    20,137.07/27,773.76 = 13,681.70/x
  3. Step 3: Cross multiply
    20,137.07x = 27,773.76 × 13,681.70
  4. Step 4: Simplify right side
    20,137.07x = 379,992,252.19
  5. Step 5: Solve for x
    x = 379,992,252.19/20,137.07
  6. Step 6: Final answer
    x = 18,870.29

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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.