Home / 18,947.39-26,146.98-10,990.35

Finding the Fourth Proportional to 18,947.39, 26,146.98 and 10,990.35

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Solution

The fourth proportional to 18,947.39, 26,146.98 and 10,990.35 is: 15,166.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.39 : 26,146.98 = 10,990.35 : x
  2. Step 2: Convert to fraction form
    18,947.39/26,146.98 = 10,990.35/x
  3. Step 3: Cross multiply
    18,947.39x = 26,146.98 × 10,990.35
  4. Step 4: Simplify right side
    18,947.39x = 287,364,461.64
  5. Step 5: Solve for x
    x = 287,364,461.64/18,947.39
  6. Step 6: Final answer
    x = 15,166.44

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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.