Home / 28,921.12-39,911.84-16,345.92

Finding the Fourth Proportional to 28,921.12, 39,911.84 and 16,345.92

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Solution

The fourth proportional to 28,921.12, 39,911.84 and 16,345.92 is: 22,557.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.12 : 39,911.84 = 16,345.92 : x
  2. Step 2: Convert to fraction form
    28,921.12/39,911.84 = 16,345.92/x
  3. Step 3: Cross multiply
    28,921.12x = 39,911.84 × 16,345.92
  4. Step 4: Simplify right side
    28,921.12x = 652,395,743.69
  5. Step 5: Solve for x
    x = 652,395,743.69/28,921.12
  6. Step 6: Final answer
    x = 22,557.76

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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.