Home / 20,433.30-30,646.95-6,390.06

Finding the Fourth Proportional to 20,433.30, 30,646.95 and 6,390.06

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Solution

The fourth proportional to 20,433.30, 30,646.95 and 6,390.06 is: 9,584.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.30 : 30,646.95 = 6,390.06 : x
  2. Step 2: Convert to fraction form
    20,433.30/30,646.95 = 6,390.06/x
  3. Step 3: Cross multiply
    20,433.30x = 30,646.95 × 6,390.06
  4. Step 4: Simplify right side
    20,433.30x = 195,835,849.32
  5. Step 5: Solve for x
    x = 195,835,849.32/20,433.30
  6. Step 6: Final answer
    x = 9,584.15

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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.