Home / 39,319.83-54,259.59-21,413.76

Finding the Fourth Proportional to 39,319.83, 54,259.59 and 21,413.76

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Solution

The fourth proportional to 39,319.83, 54,259.59 and 21,413.76 is: 29,550.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,319.83 : 54,259.59 = 21,413.76 : x
  2. Step 2: Convert to fraction form
    39,319.83/54,259.59 = 21,413.76/x
  3. Step 3: Cross multiply
    39,319.83x = 54,259.59 × 21,413.76
  4. Step 4: Simplify right side
    39,319.83x = 1,161,901,837.96
  5. Step 5: Solve for x
    x = 1,161,901,837.96/39,319.83
  6. Step 6: Final answer
    x = 29,550.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.