Home / 20,795.18-31,155.64-10,787.83

Finding the Fourth Proportional to 20,795.18, 31,155.64 and 10,787.83

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Solution

The fourth proportional to 20,795.18, 31,155.64 and 10,787.83 is: 16,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.18 : 31,155.64 = 10,787.83 : x
  2. Step 2: Convert to fraction form
    20,795.18/31,155.64 = 10,787.83/x
  3. Step 3: Cross multiply
    20,795.18x = 31,155.64 × 10,787.83
  4. Step 4: Simplify right side
    20,795.18x = 336,101,818.25
  5. Step 5: Solve for x
    x = 336,101,818.25/20,795.18
  6. Step 6: Final answer
    x = 16,162.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.