Home / 18,905.31-26,085.38-10,947.06

Finding the Fourth Proportional to 18,905.31, 26,085.38 and 10,947.06

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Solution

The fourth proportional to 18,905.31, 26,085.38 and 10,947.06 is: 15,104.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.31 : 26,085.38 = 10,947.06 : x
  2. Step 2: Convert to fraction form
    18,905.31/26,085.38 = 10,947.06/x
  3. Step 3: Cross multiply
    18,905.31x = 26,085.38 × 10,947.06
  4. Step 4: Simplify right side
    18,905.31x = 285,558,165.25
  5. Step 5: Solve for x
    x = 285,558,165.25/18,905.31
  6. Step 6: Final answer
    x = 15,104.65

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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.