Home / 20,769.37-31,158.12-7,621.84

Finding the Fourth Proportional to 20,769.37, 31,158.12 and 7,621.84

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Solution

The fourth proportional to 20,769.37, 31,158.12 and 7,621.84 is: 11,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.37 : 31,158.12 = 7,621.84 : x
  2. Step 2: Convert to fraction form
    20,769.37/31,158.12 = 7,621.84/x
  3. Step 3: Cross multiply
    20,769.37x = 31,158.12 × 7,621.84
  4. Step 4: Simplify right side
    20,769.37x = 237,482,205.34
  5. Step 5: Solve for x
    x = 237,482,205.34/20,769.37
  6. Step 6: Final answer
    x = 11,434.25

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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.