Home / 20,699.93-31,049.29-5,117.56

Finding the Fourth Proportional to 20,699.93, 31,049.29 and 5,117.56

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Solution

The fourth proportional to 20,699.93, 31,049.29 and 5,117.56 is: 7,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.93 : 31,049.29 = 5,117.56 : x
  2. Step 2: Convert to fraction form
    20,699.93/31,049.29 = 5,117.56/x
  3. Step 3: Cross multiply
    20,699.93x = 31,049.29 × 5,117.56
  4. Step 4: Simplify right side
    20,699.93x = 158,896,604.53
  5. Step 5: Solve for x
    x = 158,896,604.53/20,699.93
  6. Step 6: Final answer
    x = 7,676.19

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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.