Home / 19,876.43-27,418.05-12,411.47

Finding the Fourth Proportional to 19,876.43, 27,418.05 and 12,411.47

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Solution

The fourth proportional to 19,876.43, 27,418.05 and 12,411.47 is: 17,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.43 : 27,418.05 = 12,411.47 : x
  2. Step 2: Convert to fraction form
    19,876.43/27,418.05 = 12,411.47/x
  3. Step 3: Cross multiply
    19,876.43x = 27,418.05 × 12,411.47
  4. Step 4: Simplify right side
    19,876.43x = 340,298,373.58
  5. Step 5: Solve for x
    x = 340,298,373.58/19,876.43
  6. Step 6: Final answer
    x = 17,120.70

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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.