Home / 19,921.10-29,816.85-15,514.70

Finding the Fourth Proportional to 19,921.10, 29,816.85 and 15,514.70

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Solution

The fourth proportional to 19,921.10, 29,816.85 and 15,514.70 is: 23,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.10 : 29,816.85 = 15,514.70 : x
  2. Step 2: Convert to fraction form
    19,921.10/29,816.85 = 15,514.70/x
  3. Step 3: Cross multiply
    19,921.10x = 29,816.85 × 15,514.70
  4. Step 4: Simplify right side
    19,921.10x = 462,599,482.70
  5. Step 5: Solve for x
    x = 462,599,482.70/19,921.10
  6. Step 6: Final answer
    x = 23,221.58

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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.