Home / 21,155.58-31,737.83-8,007.66

Finding the Fourth Proportional to 21,155.58, 31,737.83 and 8,007.66

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Solution

The fourth proportional to 21,155.58, 31,737.83 and 8,007.66 is: 12,013.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.58 : 31,737.83 = 8,007.66 : x
  2. Step 2: Convert to fraction form
    21,155.58/31,737.83 = 8,007.66/x
  3. Step 3: Cross multiply
    21,155.58x = 31,737.83 × 8,007.66
  4. Step 4: Simplify right side
    21,155.58x = 254,145,711.74
  5. Step 5: Solve for x
    x = 254,145,711.74/21,155.58
  6. Step 6: Final answer
    x = 12,013.18

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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.