Home / 28,947.32-39,947.64-16,201.28

Finding the Fourth Proportional to 28,947.32, 39,947.64 and 16,201.28

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Solution

The fourth proportional to 28,947.32, 39,947.64 and 16,201.28 is: 22,357.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.32 : 39,947.64 = 16,201.28 : x
  2. Step 2: Convert to fraction form
    28,947.32/39,947.64 = 16,201.28/x
  3. Step 3: Cross multiply
    28,947.32x = 39,947.64 × 16,201.28
  4. Step 4: Simplify right side
    28,947.32x = 647,202,900.98
  5. Step 5: Solve for x
    x = 647,202,900.98/28,947.32
  6. Step 6: Final answer
    x = 22,357.96

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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.