Home / 15,837.96-21,856.06-8,764.40

Finding the Fourth Proportional to 15,837.96, 21,856.06 and 8,764.40

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Solution

The fourth proportional to 15,837.96, 21,856.06 and 8,764.40 is: 12,094.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,837.96 : 21,856.06 = 8,764.40 : x
  2. Step 2: Convert to fraction form
    15,837.96/21,856.06 = 8,764.40/x
  3. Step 3: Cross multiply
    15,837.96x = 21,856.06 × 8,764.40
  4. Step 4: Simplify right side
    15,837.96x = 191,555,317.86
  5. Step 5: Solve for x
    x = 191,555,317.86/15,837.96
  6. Step 6: Final answer
    x = 12,094.69

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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.