Home / 15,286.28-21,095.14-9,977.96

Finding the Fourth Proportional to 15,286.28, 21,095.14 and 9,977.96

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Solution

The fourth proportional to 15,286.28, 21,095.14 and 9,977.96 is: 13,769.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.28 : 21,095.14 = 9,977.96 : x
  2. Step 2: Convert to fraction form
    15,286.28/21,095.14 = 9,977.96/x
  3. Step 3: Cross multiply
    15,286.28x = 21,095.14 × 9,977.96
  4. Step 4: Simplify right side
    15,286.28x = 210,486,463.11
  5. Step 5: Solve for x
    x = 210,486,463.11/15,286.28
  6. Step 6: Final answer
    x = 13,769.63

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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.