Home / 20,111,840.70-30,167,761.05-18,852,128.70

Finding the Fourth Proportional to 20,111,840.70, 30,167,761.05 and 18,852,128.70

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Solution

The fourth proportional to 20,111,840.70, 30,167,761.05 and 18,852,128.70 is: 28,278,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,840.70 : 30,167,761.05 = 18,852,128.70 : x
  2. Step 2: Convert to fraction form
    20,111,840.70/30,167,761.05 = 18,852,128.70/x
  3. Step 3: Cross multiply
    20,111,840.70x = 30,167,761.05 × 18,852,128.70
  4. Step 4: Simplify right side
    20,111,840.70x = 568,726,513,905,447.12
  5. Step 5: Solve for x
    x = 568,726,513,905,447.12/20,111,840.70
  6. Step 6: Final answer
    x = 28,278,193.05

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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.