Home / 18,954.13-28,418.51-13,336.40

Finding the Fourth Proportional to 18,954.13, 28,418.51 and 13,336.40

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Solution

The fourth proportional to 18,954.13, 28,418.51 and 13,336.40 is: 19,995.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.13 : 28,418.51 = 13,336.40 : x
  2. Step 2: Convert to fraction form
    18,954.13/28,418.51 = 13,336.40/x
  3. Step 3: Cross multiply
    18,954.13x = 28,418.51 × 13,336.40
  4. Step 4: Simplify right side
    18,954.13x = 379,000,508.01
  5. Step 5: Solve for x
    x = 379,000,508.01/18,954.13
  6. Step 6: Final answer
    x = 19,995.67

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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.