Home / 20,149.09-30,215.79-6,818.51

Finding the Fourth Proportional to 20,149.09, 30,215.79 and 6,818.51

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Solution

The fourth proportional to 20,149.09, 30,215.79 and 6,818.51 is: 10,225.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.09 : 30,215.79 = 6,818.51 : x
  2. Step 2: Convert to fraction form
    20,149.09/30,215.79 = 6,818.51/x
  3. Step 3: Cross multiply
    20,149.09x = 30,215.79 × 6,818.51
  4. Step 4: Simplify right side
    20,149.09x = 206,026,741.81
  5. Step 5: Solve for x
    x = 206,026,741.81/20,149.09
  6. Step 6: Final answer
    x = 10,225.12

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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.