Home / 20,674.20-31,011.30-9,010.20

Finding the Fourth Proportional to 20,674.20, 31,011.30 and 9,010.20

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Solution

The fourth proportional to 20,674.20, 31,011.30 and 9,010.20 is: 13,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.20 : 31,011.30 = 9,010.20 : x
  2. Step 2: Convert to fraction form
    20,674.20/31,011.30 = 9,010.20/x
  3. Step 3: Cross multiply
    20,674.20x = 31,011.30 × 9,010.20
  4. Step 4: Simplify right side
    20,674.20x = 279,418,015.26
  5. Step 5: Solve for x
    x = 279,418,015.26/20,674.20
  6. Step 6: Final answer
    x = 13,515.30

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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.