Home / 28,278.68-39,025.06-15,533.05

Finding the Fourth Proportional to 28,278.68, 39,025.06 and 15,533.05

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Solution

The fourth proportional to 28,278.68, 39,025.06 and 15,533.05 is: 21,435.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.68 : 39,025.06 = 15,533.05 : x
  2. Step 2: Convert to fraction form
    28,278.68/39,025.06 = 15,533.05/x
  3. Step 3: Cross multiply
    28,278.68x = 39,025.06 × 15,533.05
  4. Step 4: Simplify right side
    28,278.68x = 606,177,969.54
  5. Step 5: Solve for x
    x = 606,177,969.54/28,278.68
  6. Step 6: Final answer
    x = 21,435.86

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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.