Home / 12,947.01-19,443.96-11,905.11

Finding the Fourth Proportional to 12,947.01, 19,443.96 and 11,905.11

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Solution

The fourth proportional to 12,947.01, 19,443.96 and 11,905.11 is: 17,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.01 : 19,443.96 = 11,905.11 : x
  2. Step 2: Convert to fraction form
    12,947.01/19,443.96 = 11,905.11/x
  3. Step 3: Cross multiply
    12,947.01x = 19,443.96 × 11,905.11
  4. Step 4: Simplify right side
    12,947.01x = 231,482,482.64
  5. Step 5: Solve for x
    x = 231,482,482.64/12,947.01
  6. Step 6: Final answer
    x = 17,879.22

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1.5x scale

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.