Home / 19,305.42-28,910.98-11,899.70

Finding the Fourth Proportional to 19,305.42, 28,910.98 and 11,899.70

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Solution

The fourth proportional to 19,305.42, 28,910.98 and 11,899.70 is: 17,820.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.42 : 28,910.98 = 11,899.70 : x
  2. Step 2: Convert to fraction form
    19,305.42/28,910.98 = 11,899.70/x
  3. Step 3: Cross multiply
    19,305.42x = 28,910.98 × 11,899.70
  4. Step 4: Simplify right side
    19,305.42x = 344,031,814.40
  5. Step 5: Solve for x
    x = 344,031,814.40/19,305.42
  6. Step 6: Final answer
    x = 17,820.47

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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.