Home / 28,558.38-39,411.45-15,983.40

Finding the Fourth Proportional to 28,558.38, 39,411.45 and 15,983.40

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Solution

The fourth proportional to 28,558.38, 39,411.45 and 15,983.40 is: 22,057.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.38 : 39,411.45 = 15,983.40 : x
  2. Step 2: Convert to fraction form
    28,558.38/39,411.45 = 15,983.40/x
  3. Step 3: Cross multiply
    28,558.38x = 39,411.45 × 15,983.40
  4. Step 4: Simplify right side
    28,558.38x = 629,928,969.93
  5. Step 5: Solve for x
    x = 629,928,969.93/28,558.38
  6. Step 6: Final answer
    x = 22,057.59

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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.