Home / 20,652.69-28,505.24-13,579.77

Finding the Fourth Proportional to 20,652.69, 28,505.24 and 13,579.77

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Solution

The fourth proportional to 20,652.69, 28,505.24 and 13,579.77 is: 18,743.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.69 : 28,505.24 = 13,579.77 : x
  2. Step 2: Convert to fraction form
    20,652.69/28,505.24 = 13,579.77/x
  3. Step 3: Cross multiply
    20,652.69x = 28,505.24 × 13,579.77
  4. Step 4: Simplify right side
    20,652.69x = 387,094,535.10
  5. Step 5: Solve for x
    x = 387,094,535.10/20,652.69
  6. Step 6: Final answer
    x = 18,743.06

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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.