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Finding the Fourth Proportional to 12,613.60, 17,405.22 and 7,307.32

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Solution

The fourth proportional to 12,613.60, 17,405.22 and 7,307.32 is: 10,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.60 : 17,405.22 = 7,307.32 : x
  2. Step 2: Convert to fraction form
    12,613.60/17,405.22 = 7,307.32/x
  3. Step 3: Cross multiply
    12,613.60x = 17,405.22 × 7,307.32
  4. Step 4: Simplify right side
    12,613.60x = 127,185,512.21
  5. Step 5: Solve for x
    x = 127,185,512.21/12,613.60
  6. Step 6: Final answer
    x = 10,083.20

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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.