Home / 28,507.77-39,340.46-15,761.28

Finding the Fourth Proportional to 28,507.77, 39,340.46 and 15,761.28

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Solution

The fourth proportional to 28,507.77, 39,340.46 and 15,761.28 is: 21,750.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.77 : 39,340.46 = 15,761.28 : x
  2. Step 2: Convert to fraction form
    28,507.77/39,340.46 = 15,761.28/x
  3. Step 3: Cross multiply
    28,507.77x = 39,340.46 × 15,761.28
  4. Step 4: Simplify right side
    28,507.77x = 620,056,005.39
  5. Step 5: Solve for x
    x = 620,056,005.39/28,507.77
  6. Step 6: Final answer
    x = 21,750.42

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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.