Home / 11,709.78-16,159.32-6,404.52

Finding the Fourth Proportional to 11,709.78, 16,159.32 and 6,404.52

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Solution

The fourth proportional to 11,709.78, 16,159.32 and 6,404.52 is: 8,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,709.78 : 16,159.32 = 6,404.52 : x
  2. Step 2: Convert to fraction form
    11,709.78/16,159.32 = 6,404.52/x
  3. Step 3: Cross multiply
    11,709.78x = 16,159.32 × 6,404.52
  4. Step 4: Simplify right side
    11,709.78x = 103,492,688.13
  5. Step 5: Solve for x
    x = 103,492,688.13/11,709.78
  6. Step 6: Final answer
    x = 8,838.14

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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.