Home / 11,191.10-15,443.40-6,155.31

Finding the Fourth Proportional to 11,191.10, 15,443.40 and 6,155.31

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Solution

The fourth proportional to 11,191.10, 15,443.40 and 6,155.31 is: 8,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.10 : 15,443.40 = 6,155.31 : x
  2. Step 2: Convert to fraction form
    11,191.10/15,443.40 = 6,155.31/x
  3. Step 3: Cross multiply
    11,191.10x = 15,443.40 × 6,155.31
  4. Step 4: Simplify right side
    11,191.10x = 95,058,914.45
  5. Step 5: Solve for x
    x = 95,058,914.45/11,191.10
  6. Step 6: Final answer
    x = 8,494.16

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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.