Home / 19,026.20-28,496.10-9,781.40

Finding the Fourth Proportional to 19,026.20, 28,496.10 and 9,781.40

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Solution

The fourth proportional to 19,026.20, 28,496.10 and 9,781.40 is: 14,649.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,026.20 : 28,496.10 = 9,781.40 : x
  2. Step 2: Convert to fraction form
    19,026.20/28,496.10 = 9,781.40/x
  3. Step 3: Cross multiply
    19,026.20x = 28,496.10 × 9,781.40
  4. Step 4: Simplify right side
    19,026.20x = 278,731,752.54
  5. Step 5: Solve for x
    x = 278,731,752.54/19,026.20
  6. Step 6: Final answer
    x = 14,649.89

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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.