Home / 20,913.46-31,367.76-7,766.08

Finding the Fourth Proportional to 20,913.46, 31,367.76 and 7,766.08

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Solution

The fourth proportional to 20,913.46, 31,367.76 and 7,766.08 is: 11,648.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.46 : 31,367.76 = 7,766.08 : x
  2. Step 2: Convert to fraction form
    20,913.46/31,367.76 = 7,766.08/x
  3. Step 3: Cross multiply
    20,913.46x = 31,367.76 × 7,766.08
  4. Step 4: Simplify right side
    20,913.46x = 243,604,533.58
  5. Step 5: Solve for x
    x = 243,604,533.58/20,913.46
  6. Step 6: Final answer
    x = 11,648.22

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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.