Home / 19,613.88-29,413.01-7,127.12

Finding the Fourth Proportional to 19,613.88, 29,413.01 and 7,127.12

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Solution

The fourth proportional to 19,613.88, 29,413.01 and 7,127.12 is: 10,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,613.88 : 29,413.01 = 7,127.12 : x
  2. Step 2: Convert to fraction form
    19,613.88/29,413.01 = 7,127.12/x
  3. Step 3: Cross multiply
    19,613.88x = 29,413.01 × 7,127.12
  4. Step 4: Simplify right side
    19,613.88x = 209,630,143.18
  5. Step 5: Solve for x
    x = 209,630,143.18/19,613.88
  6. Step 6: Final answer
    x = 10,687.85

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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.