Home / 19,699.38-27,189.81-11,320.74

Finding the Fourth Proportional to 19,699.38, 27,189.81 and 11,320.74

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Solution

The fourth proportional to 19,699.38, 27,189.81 and 11,320.74 is: 15,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.38 : 27,189.81 = 11,320.74 : x
  2. Step 2: Convert to fraction form
    19,699.38/27,189.81 = 11,320.74/x
  3. Step 3: Cross multiply
    19,699.38x = 27,189.81 × 11,320.74
  4. Step 4: Simplify right side
    19,699.38x = 307,808,769.66
  5. Step 5: Solve for x
    x = 307,808,769.66/19,699.38
  6. Step 6: Final answer
    x = 15,625.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.