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Finding the Fourth Proportional to 18,956, 26,159.28 and 10,572.50

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Solution

The fourth proportional to 18,956, 26,159.28 and 10,572.50 is: 14,590.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956 : 26,159.28 = 10,572.50 : x
  2. Step 2: Convert to fraction form
    18,956/26,159.28 = 10,572.50/x
  3. Step 3: Cross multiply
    18,956x = 26,159.28 × 10,572.50
  4. Step 4: Simplify right side
    18,956x = 276,568,987.80
  5. Step 5: Solve for x
    x = 276,568,987.80/18,956
  6. Step 6: Final answer
    x = 14,590.05

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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.