Home / 20,390.13-30,585.19-6,539.13

Finding the Fourth Proportional to 20,390.13, 30,585.19 and 6,539.13

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Solution

The fourth proportional to 20,390.13, 30,585.19 and 6,539.13 is: 9,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.13 : 30,585.19 = 6,539.13 : x
  2. Step 2: Convert to fraction form
    20,390.13/30,585.19 = 6,539.13/x
  3. Step 3: Cross multiply
    20,390.13x = 30,585.19 × 6,539.13
  4. Step 4: Simplify right side
    20,390.13x = 200,000,533.48
  5. Step 5: Solve for x
    x = 200,000,533.48/20,390.13
  6. Step 6: Final answer
    x = 9,808.69

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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.