Home / 42,831-64,246.50-11,666.25

Finding the Fourth Proportional to 42,831, 64,246.50 and 11,666.25

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Solution

The fourth proportional to 42,831, 64,246.50 and 11,666.25 is: 17,499.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,831 : 64,246.50 = 11,666.25 : x
  2. Step 2: Convert to fraction form
    42,831/64,246.50 = 11,666.25/x
  3. Step 3: Cross multiply
    42,831x = 64,246.50 × 11,666.25
  4. Step 4: Simplify right side
    42,831x = 749,515,730.63
  5. Step 5: Solve for x
    x = 749,515,730.63/42,831
  6. Step 6: Final answer
    x = 17,499.38

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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.