Home / 12,520.61-18,772.58-7,511.71

Finding the Fourth Proportional to 12,520.61, 18,772.58 and 7,511.71

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Solution

The fourth proportional to 12,520.61, 18,772.58 and 7,511.71 is: 11,262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.61 : 18,772.58 = 7,511.71 : x
  2. Step 2: Convert to fraction form
    12,520.61/18,772.58 = 7,511.71/x
  3. Step 3: Cross multiply
    12,520.61x = 18,772.58 × 7,511.71
  4. Step 4: Simplify right side
    12,520.61x = 141,014,148.76
  5. Step 5: Solve for x
    x = 141,014,148.76/12,520.61
  6. Step 6: Final answer
    x = 11,262.56

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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.