Home / 27,960.66-38,579.38-20,411.12

Finding the Fourth Proportional to 27,960.66, 38,579.38 and 20,411.12

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Solution

The fourth proportional to 27,960.66, 38,579.38 and 20,411.12 is: 28,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.66 : 38,579.38 = 20,411.12 : x
  2. Step 2: Convert to fraction form
    27,960.66/38,579.38 = 20,411.12/x
  3. Step 3: Cross multiply
    27,960.66x = 38,579.38 × 20,411.12
  4. Step 4: Simplify right side
    27,960.66x = 787,448,354.71
  5. Step 5: Solve for x
    x = 787,448,354.71/27,960.66
  6. Step 6: Final answer
    x = 28,162.72

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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.