Home / 20,117.90-27,773.70-13,754.06

Finding the Fourth Proportional to 20,117.90, 27,773.70 and 13,754.06

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Solution

The fourth proportional to 20,117.90, 27,773.70 and 13,754.06 is: 18,988.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.90 : 27,773.70 = 13,754.06 : x
  2. Step 2: Convert to fraction form
    20,117.90/27,773.70 = 13,754.06/x
  3. Step 3: Cross multiply
    20,117.90x = 27,773.70 × 13,754.06
  4. Step 4: Simplify right side
    20,117.90x = 382,001,136.22
  5. Step 5: Solve for x
    x = 382,001,136.22/20,117.90
  6. Step 6: Final answer
    x = 18,988.12

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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.