Home / 19,498.28-26,911.92-12,680.45

Finding the Fourth Proportional to 19,498.28, 26,911.92 and 12,680.45

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Solution

The fourth proportional to 19,498.28, 26,911.92 and 12,680.45 is: 17,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,498.28 : 26,911.92 = 12,680.45 : x
  2. Step 2: Convert to fraction form
    19,498.28/26,911.92 = 12,680.45/x
  3. Step 3: Cross multiply
    19,498.28x = 26,911.92 × 12,680.45
  4. Step 4: Simplify right side
    19,498.28x = 341,255,121.40
  5. Step 5: Solve for x
    x = 341,255,121.40/19,498.28
  6. Step 6: Final answer
    x = 17,501.81

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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.