Home / 19,947.20-29,897.45-12,822.35

Finding the Fourth Proportional to 19,947.20, 29,897.45 and 12,822.35

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Solution

The fourth proportional to 19,947.20, 29,897.45 and 12,822.35 is: 19,218.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.20 : 29,897.45 = 12,822.35 : x
  2. Step 2: Convert to fraction form
    19,947.20/29,897.45 = 12,822.35/x
  3. Step 3: Cross multiply
    19,947.20x = 29,897.45 × 12,822.35
  4. Step 4: Simplify right side
    19,947.20x = 383,355,503.90
  5. Step 5: Solve for x
    x = 383,355,503.90/19,947.20
  6. Step 6: Final answer
    x = 19,218.51

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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.