Home / 42,865.92-64,305.63-13,276.76

Finding the Fourth Proportional to 42,865.92, 64,305.63 and 13,276.76

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Solution

The fourth proportional to 42,865.92, 64,305.63 and 13,276.76 is: 19,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,865.92 : 64,305.63 = 13,276.76 : x
  2. Step 2: Convert to fraction form
    42,865.92/64,305.63 = 13,276.76/x
  3. Step 3: Cross multiply
    42,865.92x = 64,305.63 × 13,276.76
  4. Step 4: Simplify right side
    42,865.92x = 853,770,094.63
  5. Step 5: Solve for x
    x = 853,770,094.63/42,865.92
  6. Step 6: Final answer
    x = 19,917.22

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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.