Home / 18,971.68-28,460.61-7,126.38

Finding the Fourth Proportional to 18,971.68, 28,460.61 and 7,126.38

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Solution

The fourth proportional to 18,971.68, 28,460.61 and 7,126.38 is: 10,690.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.68 : 28,460.61 = 7,126.38 : x
  2. Step 2: Convert to fraction form
    18,971.68/28,460.61 = 7,126.38/x
  3. Step 3: Cross multiply
    18,971.68x = 28,460.61 × 7,126.38
  4. Step 4: Simplify right side
    18,971.68x = 202,820,961.77
  5. Step 5: Solve for x
    x = 202,820,961.77/18,971.68
  6. Step 6: Final answer
    x = 10,690.72

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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.