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Finding the Fourth Proportional to 16,390.48, 22,595 and 13,034.64

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Solution

The fourth proportional to 16,390.48, 22,595 and 13,034.64 is: 17,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.48 : 22,595 = 13,034.64 : x
  2. Step 2: Convert to fraction form
    16,390.48/22,595 = 13,034.64/x
  3. Step 3: Cross multiply
    16,390.48x = 22,595 × 13,034.64
  4. Step 4: Simplify right side
    16,390.48x = 294,517,690.80
  5. Step 5: Solve for x
    x = 294,517,690.80/16,390.48
  6. Step 6: Final answer
    x = 17,968.83

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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.