Home / 43,130.30-64,694.86-11,109.19

Finding the Fourth Proportional to 43,130.30, 64,694.86 and 11,109.19

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Solution

The fourth proportional to 43,130.30, 64,694.86 and 11,109.19 is: 16,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,130.30 : 64,694.86 = 11,109.19 : x
  2. Step 2: Convert to fraction form
    43,130.30/64,694.86 = 11,109.19/x
  3. Step 3: Cross multiply
    43,130.30x = 64,694.86 × 11,109.19
  4. Step 4: Simplify right side
    43,130.30x = 718,707,491.76
  5. Step 5: Solve for x
    x = 718,707,491.76/43,130.30
  6. Step 6: Final answer
    x = 16,663.63

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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.