Home / 15,222.13-21,006.49-8,507.75

Finding the Fourth Proportional to 15,222.13, 21,006.49 and 8,507.75

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Solution

The fourth proportional to 15,222.13, 21,006.49 and 8,507.75 is: 11,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.13 : 21,006.49 = 8,507.75 : x
  2. Step 2: Convert to fraction form
    15,222.13/21,006.49 = 8,507.75/x
  3. Step 3: Cross multiply
    15,222.13x = 21,006.49 × 8,507.75
  4. Step 4: Simplify right side
    15,222.13x = 178,717,965.30
  5. Step 5: Solve for x
    x = 178,717,965.30/15,222.13
  6. Step 6: Final answer
    x = 11,740.67

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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.