Home / 20,943.64-31,420.10-6,908.01

Finding the Fourth Proportional to 20,943.64, 31,420.10 and 6,908.01

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Solution

The fourth proportional to 20,943.64, 31,420.10 and 6,908.01 is: 10,363.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.64 : 31,420.10 = 6,908.01 : x
  2. Step 2: Convert to fraction form
    20,943.64/31,420.10 = 6,908.01/x
  3. Step 3: Cross multiply
    20,943.64x = 31,420.10 × 6,908.01
  4. Step 4: Simplify right side
    20,943.64x = 217,050,365.00
  5. Step 5: Solve for x
    x = 217,050,365.00/20,943.64
  6. Step 6: Final answer
    x = 10,363.55

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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.