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Finding the Fourth Proportional to 39,857.54, 59,789.75 and 10,275.12

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Solution

The fourth proportional to 39,857.54, 59,789.75 and 10,275.12 is: 15,413.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.54 : 59,789.75 = 10,275.12 : x
  2. Step 2: Convert to fraction form
    39,857.54/59,789.75 = 10,275.12/x
  3. Step 3: Cross multiply
    39,857.54x = 59,789.75 × 10,275.12
  4. Step 4: Simplify right side
    39,857.54x = 614,346,804.64
  5. Step 5: Solve for x
    x = 614,346,804.64/39,857.54
  6. Step 6: Final answer
    x = 15,413.57

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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.