Home / 20,158.38-30,085.10-19,633.50

Finding the Fourth Proportional to 20,158.38, 30,085.10 and 19,633.50

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Solution

The fourth proportional to 20,158.38, 30,085.10 and 19,633.50 is: 29,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.38 : 30,085.10 = 19,633.50 : x
  2. Step 2: Convert to fraction form
    20,158.38/30,085.10 = 19,633.50/x
  3. Step 3: Cross multiply
    20,158.38x = 30,085.10 × 19,633.50
  4. Step 4: Simplify right side
    20,158.38x = 590,675,810.85
  5. Step 5: Solve for x
    x = 590,675,810.85/20,158.38
  6. Step 6: Final answer
    x = 29,301.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.