Home / 18,943.86-26,139.48-11,388.39

Finding the Fourth Proportional to 18,943.86, 26,139.48 and 11,388.39

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Solution

The fourth proportional to 18,943.86, 26,139.48 and 11,388.39 is: 15,714.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.86 : 26,139.48 = 11,388.39 : x
  2. Step 2: Convert to fraction form
    18,943.86/26,139.48 = 11,388.39/x
  3. Step 3: Cross multiply
    18,943.86x = 26,139.48 × 11,388.39
  4. Step 4: Simplify right side
    18,943.86x = 297,686,451.91
  5. Step 5: Solve for x
    x = 297,686,451.91/18,943.86
  6. Step 6: Final answer
    x = 15,714.14

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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.