Home / 20,750.71-31,121.88-7,598.59

Finding the Fourth Proportional to 20,750.71, 31,121.88 and 7,598.59

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Solution

The fourth proportional to 20,750.71, 31,121.88 and 7,598.59 is: 11,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.71 : 31,121.88 = 7,598.59 : x
  2. Step 2: Convert to fraction form
    20,750.71/31,121.88 = 7,598.59/x
  3. Step 3: Cross multiply
    20,750.71x = 31,121.88 × 7,598.59
  4. Step 4: Simplify right side
    20,750.71x = 236,482,406.15
  5. Step 5: Solve for x
    x = 236,482,406.15/20,750.71
  6. Step 6: Final answer
    x = 11,396.35

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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.