Home / 13,487.40-18,612.69-7,519.44

Finding the Fourth Proportional to 13,487.40, 18,612.69 and 7,519.44

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Solution

The fourth proportional to 13,487.40, 18,612.69 and 7,519.44 is: 10,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.40 : 18,612.69 = 7,519.44 : x
  2. Step 2: Convert to fraction form
    13,487.40/18,612.69 = 7,519.44/x
  3. Step 3: Cross multiply
    13,487.40x = 18,612.69 × 7,519.44
  4. Step 4: Simplify right side
    13,487.40x = 139,957,005.69
  5. Step 5: Solve for x
    x = 139,957,005.69/13,487.40
  6. Step 6: Final answer
    x = 10,376.87

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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.