Home / 19,413.12-29,126.16-7,723.20

Finding the Fourth Proportional to 19,413.12, 29,126.16 and 7,723.20

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Solution

The fourth proportional to 19,413.12, 29,126.16 and 7,723.20 is: 11,587.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,413.12 : 29,126.16 = 7,723.20 : x
  2. Step 2: Convert to fraction form
    19,413.12/29,126.16 = 7,723.20/x
  3. Step 3: Cross multiply
    19,413.12x = 29,126.16 × 7,723.20
  4. Step 4: Simplify right side
    19,413.12x = 224,947,158.91
  5. Step 5: Solve for x
    x = 224,947,158.91/19,413.12
  6. Step 6: Final answer
    x = 11,587.38

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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.