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Finding the Fourth Proportional to 19,995.67, 29,993.55 and 5,203.45

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Solution

The fourth proportional to 19,995.67, 29,993.55 and 5,203.45 is: 7,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.67 : 29,993.55 = 5,203.45 : x
  2. Step 2: Convert to fraction form
    19,995.67/29,993.55 = 5,203.45/x
  3. Step 3: Cross multiply
    19,995.67x = 29,993.55 × 5,203.45
  4. Step 4: Simplify right side
    19,995.67x = 156,069,937.75
  5. Step 5: Solve for x
    x = 156,069,937.75/19,995.67
  6. Step 6: Final answer
    x = 7,805.19

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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.