Home / 20,490.08-30,739.74-6,259.83

Finding the Fourth Proportional to 20,490.08, 30,739.74 and 6,259.83

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Solution

The fourth proportional to 20,490.08, 30,739.74 and 6,259.83 is: 9,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.08 : 30,739.74 = 6,259.83 : x
  2. Step 2: Convert to fraction form
    20,490.08/30,739.74 = 6,259.83/x
  3. Step 3: Cross multiply
    20,490.08x = 30,739.74 × 6,259.83
  4. Step 4: Simplify right side
    20,490.08x = 192,425,407.90
  5. Step 5: Solve for x
    x = 192,425,407.90/20,490.08
  6. Step 6: Final answer
    x = 9,391.15

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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.