Home / 19,363.20-26,720.73-10,979.70

Finding the Fourth Proportional to 19,363.20, 26,720.73 and 10,979.70

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Solution

The fourth proportional to 19,363.20, 26,720.73 and 10,979.70 is: 15,151.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,363.20 : 26,720.73 = 10,979.70 : x
  2. Step 2: Convert to fraction form
    19,363.20/26,720.73 = 10,979.70/x
  3. Step 3: Cross multiply
    19,363.20x = 26,720.73 × 10,979.70
  4. Step 4: Simplify right side
    19,363.20x = 293,385,599.18
  5. Step 5: Solve for x
    x = 293,385,599.18/19,363.20
  6. Step 6: Final answer
    x = 15,151.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.