Home / 28,539.11-42,790.44-13,718.54

Finding the Fourth Proportional to 28,539.11, 42,790.44 and 13,718.54

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Solution

The fourth proportional to 28,539.11, 42,790.44 and 13,718.54 is: 20,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.11 : 42,790.44 = 13,718.54 : x
  2. Step 2: Convert to fraction form
    28,539.11/42,790.44 = 13,718.54/x
  3. Step 3: Cross multiply
    28,539.11x = 42,790.44 × 13,718.54
  4. Step 4: Simplify right side
    28,539.11x = 587,022,362.76
  5. Step 5: Solve for x
    x = 587,022,362.76/28,539.11
  6. Step 6: Final answer
    x = 20,569.05

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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.