Home / 19,897.85-29,847.69-18,940.28

Finding the Fourth Proportional to 19,897.85, 29,847.69 and 18,940.28

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Solution

The fourth proportional to 19,897.85, 29,847.69 and 18,940.28 is: 28,411.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,897.85 : 29,847.69 = 18,940.28 : x
  2. Step 2: Convert to fraction form
    19,897.85/29,847.69 = 18,940.28/x
  3. Step 3: Cross multiply
    19,897.85x = 29,847.69 × 18,940.28
  4. Step 4: Simplify right side
    19,897.85x = 565,323,624.61
  5. Step 5: Solve for x
    x = 565,323,624.61/19,897.85
  6. Step 6: Final answer
    x = 28,411.29

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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.