Home / 20,519.56-30,783.18-6,666.76

Finding the Fourth Proportional to 20,519.56, 30,783.18 and 6,666.76

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Solution

The fourth proportional to 20,519.56, 30,783.18 and 6,666.76 is: 10,001.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.56 : 30,783.18 = 6,666.76 : x
  2. Step 2: Convert to fraction form
    20,519.56/30,783.18 = 6,666.76/x
  3. Step 3: Cross multiply
    20,519.56x = 30,783.18 × 6,666.76
  4. Step 4: Simplify right side
    20,519.56x = 205,224,073.10
  5. Step 5: Solve for x
    x = 205,224,073.10/20,519.56
  6. Step 6: Final answer
    x = 10,001.39

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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.