Home / 20,207.76-27,864.42-13,835.40

Finding the Fourth Proportional to 20,207.76, 27,864.42 and 13,835.40

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Solution

The fourth proportional to 20,207.76, 27,864.42 and 13,835.40 is: 19,077.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.76 : 27,864.42 = 13,835.40 : x
  2. Step 2: Convert to fraction form
    20,207.76/27,864.42 = 13,835.40/x
  3. Step 3: Cross multiply
    20,207.76x = 27,864.42 × 13,835.40
  4. Step 4: Simplify right side
    20,207.76x = 385,515,396.47
  5. Step 5: Solve for x
    x = 385,515,396.47/20,207.76
  6. Step 6: Final answer
    x = 19,077.59

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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.