Home / 19,120.20-26,407.95-12,736.28

Finding the Fourth Proportional to 19,120.20, 26,407.95 and 12,736.28

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Solution

The fourth proportional to 19,120.20, 26,407.95 and 12,736.28 is: 17,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.20 : 26,407.95 = 12,736.28 : x
  2. Step 2: Convert to fraction form
    19,120.20/26,407.95 = 12,736.28/x
  3. Step 3: Cross multiply
    19,120.20x = 26,407.95 × 12,736.28
  4. Step 4: Simplify right side
    19,120.20x = 336,338,913.39
  5. Step 5: Solve for x
    x = 336,338,913.39/19,120.20
  6. Step 6: Final answer
    x = 17,590.76

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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.