Home / 18,139.83-27,210.69-4,991.91

Finding the Fourth Proportional to 18,139.83, 27,210.69 and 4,991.91

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Solution

The fourth proportional to 18,139.83, 27,210.69 and 4,991.91 is: 7,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.83 : 27,210.69 = 4,991.91 : x
  2. Step 2: Convert to fraction form
    18,139.83/27,210.69 = 4,991.91/x
  3. Step 3: Cross multiply
    18,139.83x = 27,210.69 × 4,991.91
  4. Step 4: Simplify right side
    18,139.83x = 135,833,315.52
  5. Step 5: Solve for x
    x = 135,833,315.52/18,139.83
  6. Step 6: Final answer
    x = 7,488.13

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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.