Home / 20,189.11-30,332.94-19,070.10

Finding the Fourth Proportional to 20,189.11, 30,332.94 and 19,070.10

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Solution

The fourth proportional to 20,189.11, 30,332.94 and 19,070.10 is: 28,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.11 : 30,332.94 = 19,070.10 : x
  2. Step 2: Convert to fraction form
    20,189.11/30,332.94 = 19,070.10/x
  3. Step 3: Cross multiply
    20,189.11x = 30,332.94 × 19,070.10
  4. Step 4: Simplify right side
    20,189.11x = 578,452,047.43
  5. Step 5: Solve for x
    x = 578,452,047.43/20,189.11
  6. Step 6: Final answer
    x = 28,651.69

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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.