Home / 40,916.20-61,413.45-21,208.90

Finding the Fourth Proportional to 40,916.20, 61,413.45 and 21,208.90

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Solution

The fourth proportional to 40,916.20, 61,413.45 and 21,208.90 is: 31,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,916.20 : 61,413.45 = 21,208.90 : x
  2. Step 2: Convert to fraction form
    40,916.20/61,413.45 = 21,208.90/x
  3. Step 3: Cross multiply
    40,916.20x = 61,413.45 × 21,208.90
  4. Step 4: Simplify right side
    40,916.20x = 1,302,511,719.71
  5. Step 5: Solve for x
    x = 1,302,511,719.71/40,916.20
  6. Step 6: Final answer
    x = 31,833.64

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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.