Home / 28,731.34-39,648.49-15,983.87

Finding the Fourth Proportional to 28,731.34, 39,648.49 and 15,983.87

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Solution

The fourth proportional to 28,731.34, 39,648.49 and 15,983.87 is: 22,057.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.34 : 39,648.49 = 15,983.87 : x
  2. Step 2: Convert to fraction form
    28,731.34/39,648.49 = 15,983.87/x
  3. Step 3: Cross multiply
    28,731.34x = 39,648.49 × 15,983.87
  4. Step 4: Simplify right side
    28,731.34x = 633,736,369.02
  5. Step 5: Solve for x
    x = 633,736,369.02/28,731.34
  6. Step 6: Final answer
    x = 22,057.32

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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.