Home / 13,947.79-19,248.06-7,979.09

Finding the Fourth Proportional to 13,947.79, 19,248.06 and 7,979.09

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Solution

The fourth proportional to 13,947.79, 19,248.06 and 7,979.09 is: 11,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.79 : 19,248.06 = 7,979.09 : x
  2. Step 2: Convert to fraction form
    13,947.79/19,248.06 = 7,979.09/x
  3. Step 3: Cross multiply
    13,947.79x = 19,248.06 × 7,979.09
  4. Step 4: Simplify right side
    13,947.79x = 153,581,963.17
  5. Step 5: Solve for x
    x = 153,581,963.17/13,947.79
  6. Step 6: Final answer
    x = 11,011.20

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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.