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Finding the Fourth Proportional to 20,018.88, 29,976.48 and 13,798.08

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Solution

The fourth proportional to 20,018.88, 29,976.48 and 13,798.08 is: 20,661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.88 : 29,976.48 = 13,798.08 : x
  2. Step 2: Convert to fraction form
    20,018.88/29,976.48 = 13,798.08/x
  3. Step 3: Cross multiply
    20,018.88x = 29,976.48 × 13,798.08
  4. Step 4: Simplify right side
    20,018.88x = 413,617,869.16
  5. Step 5: Solve for x
    x = 413,617,869.16/20,018.88
  6. Step 6: Final answer
    x = 20,661.39

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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.