Home / 20,494.48-28,263.72-13,418.32

Finding the Fourth Proportional to 20,494.48, 28,263.72 and 13,418.32

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Solution

The fourth proportional to 20,494.48, 28,263.72 and 13,418.32 is: 18,505.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.48 : 28,263.72 = 13,418.32 : x
  2. Step 2: Convert to fraction form
    20,494.48/28,263.72 = 13,418.32/x
  3. Step 3: Cross multiply
    20,494.48x = 28,263.72 × 13,418.32
  4. Step 4: Simplify right side
    20,494.48x = 379,251,639.35
  5. Step 5: Solve for x
    x = 379,251,639.35/20,494.48
  6. Step 6: Final answer
    x = 18,505.06

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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.