Home / 15,446.72-21,331.59-13,195.47

Finding the Fourth Proportional to 15,446.72, 21,331.59 and 13,195.47

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Solution

The fourth proportional to 15,446.72, 21,331.59 and 13,195.47 is: 18,222.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.72 : 21,331.59 = 13,195.47 : x
  2. Step 2: Convert to fraction form
    15,446.72/21,331.59 = 13,195.47/x
  3. Step 3: Cross multiply
    15,446.72x = 21,331.59 × 13,195.47
  4. Step 4: Simplify right side
    15,446.72x = 281,480,355.90
  5. Step 5: Solve for x
    x = 281,480,355.90/15,446.72
  6. Step 6: Final answer
    x = 18,222.67

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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.