Home / 19,159.56-28,742.58-8,772.12

Finding the Fourth Proportional to 19,159.56, 28,742.58 and 8,772.12

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Solution

The fourth proportional to 19,159.56, 28,742.58 and 8,772.12 is: 13,159.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.56 : 28,742.58 = 8,772.12 : x
  2. Step 2: Convert to fraction form
    19,159.56/28,742.58 = 8,772.12/x
  3. Step 3: Cross multiply
    19,159.56x = 28,742.58 × 8,772.12
  4. Step 4: Simplify right side
    19,159.56x = 252,133,360.87
  5. Step 5: Solve for x
    x = 252,133,360.87/19,159.56
  6. Step 6: Final answer
    x = 13,159.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.