Home / 18,947.48-26,147.76-10,990.04

Finding the Fourth Proportional to 18,947.48, 26,147.76 and 10,990.04

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Solution

The fourth proportional to 18,947.48, 26,147.76 and 10,990.04 is: 15,166.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.48 : 26,147.76 = 10,990.04 : x
  2. Step 2: Convert to fraction form
    18,947.48/26,147.76 = 10,990.04/x
  3. Step 3: Cross multiply
    18,947.48x = 26,147.76 × 10,990.04
  4. Step 4: Simplify right side
    18,947.48x = 287,364,928.31
  5. Step 5: Solve for x
    x = 287,364,928.31/18,947.48
  6. Step 6: Final answer
    x = 15,166.39

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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.