Home / 20,430.88-30,651.12-6,579.36

Finding the Fourth Proportional to 20,430.88, 30,651.12 and 6,579.36

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Solution

The fourth proportional to 20,430.88, 30,651.12 and 6,579.36 is: 9,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.88 : 30,651.12 = 6,579.36 : x
  2. Step 2: Convert to fraction form
    20,430.88/30,651.12 = 6,579.36/x
  3. Step 3: Cross multiply
    20,430.88x = 30,651.12 × 6,579.36
  4. Step 4: Simplify right side
    20,430.88x = 201,664,752.88
  5. Step 5: Solve for x
    x = 201,664,752.88/20,430.88
  6. Step 6: Final answer
    x = 9,870.59

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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.