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Finding the Fourth Proportional to 34,405.60, 51,613.16 and 12,213.70

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Solution

The fourth proportional to 34,405.60, 51,613.16 and 12,213.70 is: 18,322.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,405.60 : 51,613.16 = 12,213.70 : x
  2. Step 2: Convert to fraction form
    34,405.60/51,613.16 = 12,213.70/x
  3. Step 3: Cross multiply
    34,405.60x = 51,613.16 × 12,213.70
  4. Step 4: Simplify right side
    34,405.60x = 630,387,652.29
  5. Step 5: Solve for x
    x = 630,387,652.29/34,405.60
  6. Step 6: Final answer
    x = 18,322.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.