Home / 20,769.62-31,154.16-5,978.48

Finding the Fourth Proportional to 20,769.62, 31,154.16 and 5,978.48

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Solution

The fourth proportional to 20,769.62, 31,154.16 and 5,978.48 is: 8,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.62 : 31,154.16 = 5,978.48 : x
  2. Step 2: Convert to fraction form
    20,769.62/31,154.16 = 5,978.48/x
  3. Step 3: Cross multiply
    20,769.62x = 31,154.16 × 5,978.48
  4. Step 4: Simplify right side
    20,769.62x = 186,254,522.48
  5. Step 5: Solve for x
    x = 186,254,522.48/20,769.62
  6. Step 6: Final answer
    x = 8,967.64

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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.