Home / 20,453.36-28,225.50-11,500.88

Finding the Fourth Proportional to 20,453.36, 28,225.50 and 11,500.88

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Solution

The fourth proportional to 20,453.36, 28,225.50 and 11,500.88 is: 15,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.36 : 28,225.50 = 11,500.88 : x
  2. Step 2: Convert to fraction form
    20,453.36/28,225.50 = 11,500.88/x
  3. Step 3: Cross multiply
    20,453.36x = 28,225.50 × 11,500.88
  4. Step 4: Simplify right side
    20,453.36x = 324,618,088.44
  5. Step 5: Solve for x
    x = 324,618,088.44/20,453.36
  6. Step 6: Final answer
    x = 15,871.14

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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.