Home / 15,286.95-21,100.37-9,002.97

Finding the Fourth Proportional to 15,286.95, 21,100.37 and 9,002.97

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Solution

The fourth proportional to 15,286.95, 21,100.37 and 9,002.97 is: 12,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.95 : 21,100.37 = 9,002.97 : x
  2. Step 2: Convert to fraction form
    15,286.95/21,100.37 = 9,002.97/x
  3. Step 3: Cross multiply
    15,286.95x = 21,100.37 × 9,002.97
  4. Step 4: Simplify right side
    15,286.95x = 189,965,953.08
  5. Step 5: Solve for x
    x = 189,965,953.08/15,286.95
  6. Step 6: Final answer
    x = 12,426.67

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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.