Home / 11,815.76-16,305.54-6,511.07

Finding the Fourth Proportional to 11,815.76, 16,305.54 and 6,511.07

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Solution

The fourth proportional to 11,815.76, 16,305.54 and 6,511.07 is: 8,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.76 : 16,305.54 = 6,511.07 : x
  2. Step 2: Convert to fraction form
    11,815.76/16,305.54 = 6,511.07/x
  3. Step 3: Cross multiply
    11,815.76x = 16,305.54 × 6,511.07
  4. Step 4: Simplify right side
    11,815.76x = 106,166,430.80
  5. Step 5: Solve for x
    x = 106,166,430.80/11,815.76
  6. Step 6: Final answer
    x = 8,985.16

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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.