Home / 20,273.29-30,261.75-18,809.80

Finding the Fourth Proportional to 20,273.29, 30,261.75 and 18,809.80

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Solution

The fourth proportional to 20,273.29, 30,261.75 and 18,809.80 is: 28,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.29 : 30,261.75 = 18,809.80 : x
  2. Step 2: Convert to fraction form
    20,273.29/30,261.75 = 18,809.80/x
  3. Step 3: Cross multiply
    20,273.29x = 30,261.75 × 18,809.80
  4. Step 4: Simplify right side
    20,273.29x = 569,217,465.15
  5. Step 5: Solve for x
    x = 569,217,465.15/20,273.29
  6. Step 6: Final answer
    x = 28,077.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.