Home / 20,859.79-31,289.88-5,064.96

Finding the Fourth Proportional to 20,859.79, 31,289.88 and 5,064.96

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Solution

The fourth proportional to 20,859.79, 31,289.88 and 5,064.96 is: 7,597.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.79 : 31,289.88 = 5,064.96 : x
  2. Step 2: Convert to fraction form
    20,859.79/31,289.88 = 5,064.96/x
  3. Step 3: Cross multiply
    20,859.79x = 31,289.88 × 5,064.96
  4. Step 4: Simplify right side
    20,859.79x = 158,481,990.60
  5. Step 5: Solve for x
    x = 158,481,990.60/20,859.79
  6. Step 6: Final answer
    x = 7,597.49

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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.