Home / 11,688.04-16,131.54-6,907.78

Finding the Fourth Proportional to 11,688.04, 16,131.54 and 6,907.78

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Solution

The fourth proportional to 11,688.04, 16,131.54 and 6,907.78 is: 9,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.04 : 16,131.54 = 6,907.78 : x
  2. Step 2: Convert to fraction form
    11,688.04/16,131.54 = 6,907.78/x
  3. Step 3: Cross multiply
    11,688.04x = 16,131.54 × 6,907.78
  4. Step 4: Simplify right side
    11,688.04x = 111,433,129.38
  5. Step 5: Solve for x
    x = 111,433,129.38/11,688.04
  6. Step 6: Final answer
    x = 9,533.94

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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.