Home / 20,505.18-30,758.07-6,464.94

Finding the Fourth Proportional to 20,505.18, 30,758.07 and 6,464.94

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Solution

The fourth proportional to 20,505.18, 30,758.07 and 6,464.94 is: 9,697.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.18 : 30,758.07 = 6,464.94 : x
  2. Step 2: Convert to fraction form
    20,505.18/30,758.07 = 6,464.94/x
  3. Step 3: Cross multiply
    20,505.18x = 30,758.07 × 6,464.94
  4. Step 4: Simplify right side
    20,505.18x = 198,849,077.07
  5. Step 5: Solve for x
    x = 198,849,077.07/20,505.18
  6. Step 6: Final answer
    x = 9,697.50

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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.