Home / 19,810.80-27,338.87-11,427.30

Finding the Fourth Proportional to 19,810.80, 27,338.87 and 11,427.30

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Solution

The fourth proportional to 19,810.80, 27,338.87 and 11,427.30 is: 15,769.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.80 : 27,338.87 = 11,427.30 : x
  2. Step 2: Convert to fraction form
    19,810.80/27,338.87 = 11,427.30/x
  3. Step 3: Cross multiply
    19,810.80x = 27,338.87 × 11,427.30
  4. Step 4: Simplify right side
    19,810.80x = 312,409,412.01
  5. Step 5: Solve for x
    x = 312,409,412.01/19,810.80
  6. Step 6: Final answer
    x = 15,769.65

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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.