Home / 15,134.07-20,885.69-12,611.96

Finding the Fourth Proportional to 15,134.07, 20,885.69 and 12,611.96

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Solution

The fourth proportional to 15,134.07, 20,885.69 and 12,611.96 is: 17,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.07 : 20,885.69 = 12,611.96 : x
  2. Step 2: Convert to fraction form
    15,134.07/20,885.69 = 12,611.96/x
  3. Step 3: Cross multiply
    15,134.07x = 20,885.69 × 12,611.96
  4. Step 4: Simplify right side
    15,134.07x = 263,409,434.64
  5. Step 5: Solve for x
    x = 263,409,434.64/15,134.07
  6. Step 6: Final answer
    x = 17,405.07

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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.