Home / 20,493.32-28,285.38-13,415.63

Finding the Fourth Proportional to 20,493.32, 28,285.38 and 13,415.63

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Solution

The fourth proportional to 20,493.32, 28,285.38 and 13,415.63 is: 18,516.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.32 : 28,285.38 = 13,415.63 : x
  2. Step 2: Convert to fraction form
    20,493.32/28,285.38 = 13,415.63/x
  3. Step 3: Cross multiply
    20,493.32x = 28,285.38 × 13,415.63
  4. Step 4: Simplify right side
    20,493.32x = 379,466,051.06
  5. Step 5: Solve for x
    x = 379,466,051.06/20,493.32
  6. Step 6: Final answer
    x = 18,516.58

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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.