Home / 12,015.64-18,031.92-4,225.08

Finding the Fourth Proportional to 12,015.64, 18,031.92 and 4,225.08

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Solution

The fourth proportional to 12,015.64, 18,031.92 and 4,225.08 is: 6,340.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.64 : 18,031.92 = 4,225.08 : x
  2. Step 2: Convert to fraction form
    12,015.64/18,031.92 = 4,225.08/x
  3. Step 3: Cross multiply
    12,015.64x = 18,031.92 × 4,225.08
  4. Step 4: Simplify right side
    12,015.64x = 76,186,304.55
  5. Step 5: Solve for x
    x = 76,186,304.55/12,015.64
  6. Step 6: Final answer
    x = 6,340.59

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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.