Home / 19,805.80-27,332.75-11,309.30

Finding the Fourth Proportional to 19,805.80, 27,332.75 and 11,309.30

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Solution

The fourth proportional to 19,805.80, 27,332.75 and 11,309.30 is: 15,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.80 : 27,332.75 = 11,309.30 : x
  2. Step 2: Convert to fraction form
    19,805.80/27,332.75 = 11,309.30/x
  3. Step 3: Cross multiply
    19,805.80x = 27,332.75 × 11,309.30
  4. Step 4: Simplify right side
    19,805.80x = 309,114,269.58
  5. Step 5: Solve for x
    x = 309,114,269.58/19,805.80
  6. Step 6: Final answer
    x = 15,607.26

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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.