Home / 20,461.83-28,236.91-11,509.24

Finding the Fourth Proportional to 20,461.83, 28,236.91 and 11,509.24

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Solution

The fourth proportional to 20,461.83, 28,236.91 and 11,509.24 is: 15,882.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.83 : 28,236.91 = 11,509.24 : x
  2. Step 2: Convert to fraction form
    20,461.83/28,236.91 = 11,509.24/x
  3. Step 3: Cross multiply
    20,461.83x = 28,236.91 × 11,509.24
  4. Step 4: Simplify right side
    20,461.83x = 324,985,374.05
  5. Step 5: Solve for x
    x = 324,985,374.05/20,461.83
  6. Step 6: Final answer
    x = 15,882.52

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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.