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Finding the Fourth Proportional to 12,387.15, 17,095.44 and 7,080.93

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Solution

The fourth proportional to 12,387.15, 17,095.44 and 7,080.93 is: 9,772.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.15 : 17,095.44 = 7,080.93 : x
  2. Step 2: Convert to fraction form
    12,387.15/17,095.44 = 7,080.93/x
  3. Step 3: Cross multiply
    12,387.15x = 17,095.44 × 7,080.93
  4. Step 4: Simplify right side
    12,387.15x = 121,051,613.96
  5. Step 5: Solve for x
    x = 121,051,613.96/12,387.15
  6. Step 6: Final answer
    x = 9,772.35

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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.