Home / 11,715.28-17,575.08-3,929.68

Finding the Fourth Proportional to 11,715.28, 17,575.08 and 3,929.68

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Solution

The fourth proportional to 11,715.28, 17,575.08 and 3,929.68 is: 5,895.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.28 : 17,575.08 = 3,929.68 : x
  2. Step 2: Convert to fraction form
    11,715.28/17,575.08 = 3,929.68/x
  3. Step 3: Cross multiply
    11,715.28x = 17,575.08 × 3,929.68
  4. Step 4: Simplify right side
    11,715.28x = 69,064,440.37
  5. Step 5: Solve for x
    x = 69,064,440.37/11,715.28
  6. Step 6: Final answer
    x = 5,895.24

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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.