Home / 12,990.06-17,932.28-7,611.75

Finding the Fourth Proportional to 12,990.06, 17,932.28 and 7,611.75

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Solution

The fourth proportional to 12,990.06, 17,932.28 and 7,611.75 is: 10,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.06 : 17,932.28 = 7,611.75 : x
  2. Step 2: Convert to fraction form
    12,990.06/17,932.28 = 7,611.75/x
  3. Step 3: Cross multiply
    12,990.06x = 17,932.28 × 7,611.75
  4. Step 4: Simplify right side
    12,990.06x = 136,495,994.23
  5. Step 5: Solve for x
    x = 136,495,994.23/12,990.06
  6. Step 6: Final answer
    x = 10,507.73

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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.