Home / 12,387.88-17,095.16-6,722.64

Finding the Fourth Proportional to 12,387.88, 17,095.16 and 6,722.64

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Solution

The fourth proportional to 12,387.88, 17,095.16 and 6,722.64 is: 9,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.88 : 17,095.16 = 6,722.64 : x
  2. Step 2: Convert to fraction form
    12,387.88/17,095.16 = 6,722.64/x
  3. Step 3: Cross multiply
    12,387.88x = 17,095.16 × 6,722.64
  4. Step 4: Simplify right side
    12,387.88x = 114,924,606.42
  5. Step 5: Solve for x
    x = 114,924,606.42/12,387.88
  6. Step 6: Final answer
    x = 9,277.18

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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.