Home / 11,152.54-15,386.11-6,435.91

Finding the Fourth Proportional to 11,152.54, 15,386.11 and 6,435.91

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Solution

The fourth proportional to 11,152.54, 15,386.11 and 6,435.91 is: 8,879.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.54 : 15,386.11 = 6,435.91 : x
  2. Step 2: Convert to fraction form
    11,152.54/15,386.11 = 6,435.91/x
  3. Step 3: Cross multiply
    11,152.54x = 15,386.11 × 6,435.91
  4. Step 4: Simplify right side
    11,152.54x = 99,023,619.21
  5. Step 5: Solve for x
    x = 99,023,619.21/11,152.54
  6. Step 6: Final answer
    x = 8,879.02

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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.