Home / 19,809.20-29,738.10-19,663.40

Finding the Fourth Proportional to 19,809.20, 29,738.10 and 19,663.40

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Solution

The fourth proportional to 19,809.20, 29,738.10 and 19,663.40 is: 29,519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.20 : 29,738.10 = 19,663.40 : x
  2. Step 2: Convert to fraction form
    19,809.20/29,738.10 = 19,663.40/x
  3. Step 3: Cross multiply
    19,809.20x = 29,738.10 × 19,663.40
  4. Step 4: Simplify right side
    19,809.20x = 584,752,155.54
  5. Step 5: Solve for x
    x = 584,752,155.54/19,809.20
  6. Step 6: Final answer
    x = 29,519.22

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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.