Home / 20,699.95-31,049.99-5,117.57

Finding the Fourth Proportional to 20,699.95, 31,049.99 and 5,117.57

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Solution

The fourth proportional to 20,699.95, 31,049.99 and 5,117.57 is: 7,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.95 : 31,049.99 = 5,117.57 : x
  2. Step 2: Convert to fraction form
    20,699.95/31,049.99 = 5,117.57/x
  3. Step 3: Cross multiply
    20,699.95x = 31,049.99 × 5,117.57
  4. Step 4: Simplify right side
    20,699.95x = 158,900,587.74
  5. Step 5: Solve for x
    x = 158,900,587.74/20,699.95
  6. Step 6: Final answer
    x = 7,676.38

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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.