Home / 12,624.18-18,915.50-7,678.92

Finding the Fourth Proportional to 12,624.18, 18,915.50 and 7,678.92

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Solution

The fourth proportional to 12,624.18, 18,915.50 and 7,678.92 is: 11,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.18 : 18,915.50 = 7,678.92 : x
  2. Step 2: Convert to fraction form
    12,624.18/18,915.50 = 7,678.92/x
  3. Step 3: Cross multiply
    12,624.18x = 18,915.50 × 7,678.92
  4. Step 4: Simplify right side
    12,624.18x = 145,250,611.26
  5. Step 5: Solve for x
    x = 145,250,611.26/12,624.18
  6. Step 6: Final answer
    x = 11,505.75

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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.