Home / 12,500.36-18,709.68-6,869.42

Finding the Fourth Proportional to 12,500.36, 18,709.68 and 6,869.42

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Solution

The fourth proportional to 12,500.36, 18,709.68 and 6,869.42 is: 10,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,500.36 : 18,709.68 = 6,869.42 : x
  2. Step 2: Convert to fraction form
    12,500.36/18,709.68 = 6,869.42/x
  3. Step 3: Cross multiply
    12,500.36x = 18,709.68 × 6,869.42
  4. Step 4: Simplify right side
    12,500.36x = 128,524,649.99
  5. Step 5: Solve for x
    x = 128,524,649.99/12,500.36
  6. Step 6: Final answer
    x = 10,281.68

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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.