Home / 20,900.58-31,334.46-14,306.78

Finding the Fourth Proportional to 20,900.58, 31,334.46 and 14,306.78

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Solution

The fourth proportional to 20,900.58, 31,334.46 and 14,306.78 is: 21,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.58 : 31,334.46 = 14,306.78 : x
  2. Step 2: Convert to fraction form
    20,900.58/31,334.46 = 14,306.78/x
  3. Step 3: Cross multiply
    20,900.58x = 31,334.46 × 14,306.78
  4. Step 4: Simplify right side
    20,900.58x = 448,295,225.64
  5. Step 5: Solve for x
    x = 448,295,225.64/20,900.58
  6. Step 6: Final answer
    x = 21,448.94

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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.