Home / 29,285.15-40,413.31-15,856.37

Finding the Fourth Proportional to 29,285.15, 40,413.31 and 15,856.37

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Solution

The fourth proportional to 29,285.15, 40,413.31 and 15,856.37 is: 21,881.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,285.15 : 40,413.31 = 15,856.37 : x
  2. Step 2: Convert to fraction form
    29,285.15/40,413.31 = 15,856.37/x
  3. Step 3: Cross multiply
    29,285.15x = 40,413.31 × 15,856.37
  4. Step 4: Simplify right side
    29,285.15x = 640,808,622.64
  5. Step 5: Solve for x
    x = 640,808,622.64/29,285.15
  6. Step 6: Final answer
    x = 21,881.69

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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.