Home / 19,909.98-29,864.97-5,118.91

Finding the Fourth Proportional to 19,909.98, 29,864.97 and 5,118.91

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Solution

The fourth proportional to 19,909.98, 29,864.97 and 5,118.91 is: 7,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.98 : 29,864.97 = 5,118.91 : x
  2. Step 2: Convert to fraction form
    19,909.98/29,864.97 = 5,118.91/x
  3. Step 3: Cross multiply
    19,909.98x = 29,864.97 × 5,118.91
  4. Step 4: Simplify right side
    19,909.98x = 152,876,093.58
  5. Step 5: Solve for x
    x = 152,876,093.58/19,909.98
  6. Step 6: Final answer
    x = 7,678.37

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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.