Home / 11,487.19-15,851.76-6,450.79

Finding the Fourth Proportional to 11,487.19, 15,851.76 and 6,450.79

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Solution

The fourth proportional to 11,487.19, 15,851.76 and 6,450.79 is: 8,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.19 : 15,851.76 = 6,450.79 : x
  2. Step 2: Convert to fraction form
    11,487.19/15,851.76 = 6,450.79/x
  3. Step 3: Cross multiply
    11,487.19x = 15,851.76 × 6,450.79
  4. Step 4: Simplify right side
    11,487.19x = 102,256,374.89
  5. Step 5: Solve for x
    x = 102,256,374.89/11,487.19
  6. Step 6: Final answer
    x = 8,901.77

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Half scale
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Double scale
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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.