Home / 20,840.65-31,263.05-6,800.11

Finding the Fourth Proportional to 20,840.65, 31,263.05 and 6,800.11

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Solution

The fourth proportional to 20,840.65, 31,263.05 and 6,800.11 is: 10,200.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.65 : 31,263.05 = 6,800.11 : x
  2. Step 2: Convert to fraction form
    20,840.65/31,263.05 = 6,800.11/x
  3. Step 3: Cross multiply
    20,840.65x = 31,263.05 × 6,800.11
  4. Step 4: Simplify right side
    20,840.65x = 212,592,178.94
  5. Step 5: Solve for x
    x = 212,592,178.94/20,840.65
  6. Step 6: Final answer
    x = 10,200.84

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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.