Home / 20,873.61-28,807.58-11,922.45

Finding the Fourth Proportional to 20,873.61, 28,807.58 and 11,922.45

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Solution

The fourth proportional to 20,873.61, 28,807.58 and 11,922.45 is: 16,454.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.61 : 28,807.58 = 11,922.45 : x
  2. Step 2: Convert to fraction form
    20,873.61/28,807.58 = 11,922.45/x
  3. Step 3: Cross multiply
    20,873.61x = 28,807.58 × 11,922.45
  4. Step 4: Simplify right side
    20,873.61x = 343,456,872.56
  5. Step 5: Solve for x
    x = 343,456,872.56/20,873.61
  6. Step 6: Final answer
    x = 16,454.12

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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.