Home / 20,581.51-30,872.27-4,999.03

Finding the Fourth Proportional to 20,581.51, 30,872.27 and 4,999.03

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Solution

The fourth proportional to 20,581.51, 30,872.27 and 4,999.03 is: 7,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.51 : 30,872.27 = 4,999.03 : x
  2. Step 2: Convert to fraction form
    20,581.51/30,872.27 = 4,999.03/x
  3. Step 3: Cross multiply
    20,581.51x = 30,872.27 × 4,999.03
  4. Step 4: Simplify right side
    20,581.51x = 154,331,403.90
  5. Step 5: Solve for x
    x = 154,331,403.90/20,581.51
  6. Step 6: Final answer
    x = 7,498.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.