Home / 13,487.68-18,611.80-7,520.76

Finding the Fourth Proportional to 13,487.68, 18,611.80 and 7,520.76

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Solution

The fourth proportional to 13,487.68, 18,611.80 and 7,520.76 is: 10,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.68 : 18,611.80 = 7,520.76 : x
  2. Step 2: Convert to fraction form
    13,487.68/18,611.80 = 7,520.76/x
  3. Step 3: Cross multiply
    13,487.68x = 18,611.80 × 7,520.76
  4. Step 4: Simplify right side
    13,487.68x = 139,974,880.97
  5. Step 5: Solve for x
    x = 139,974,880.97/13,487.68
  6. Step 6: Final answer
    x = 10,377.98

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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.