Home / 20,188,021.70-30,282,032.55-18,629,128.10

Finding the Fourth Proportional to 20,188,021.70, 30,282,032.55 and 18,629,128.10

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Solution

The fourth proportional to 20,188,021.70, 30,282,032.55 and 18,629,128.10 is: 27,943,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188,021.70 : 30,282,032.55 = 18,629,128.10 : x
  2. Step 2: Convert to fraction form
    20,188,021.70/30,282,032.55 = 18,629,128.10/x
  3. Step 3: Cross multiply
    20,188,021.70x = 30,282,032.55 × 18,629,128.10
  4. Step 4: Simplify right side
    20,188,021.70x = 564,127,863,502,319.75
  5. Step 5: Solve for x
    x = 564,127,863,502,319.75/20,188,021.70
  6. Step 6: Final answer
    x = 27,943,692.15

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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.