Home / 20,801.40-31,202.10-10,433.40

Finding the Fourth Proportional to 20,801.40, 31,202.10 and 10,433.40

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Solution

The fourth proportional to 20,801.40, 31,202.10 and 10,433.40 is: 15,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.40 : 31,202.10 = 10,433.40 : x
  2. Step 2: Convert to fraction form
    20,801.40/31,202.10 = 10,433.40/x
  3. Step 3: Cross multiply
    20,801.40x = 31,202.10 × 10,433.40
  4. Step 4: Simplify right side
    20,801.40x = 325,543,990.14
  5. Step 5: Solve for x
    x = 325,543,990.14/20,801.40
  6. Step 6: Final answer
    x = 15,650.10

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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.