Home / 13,111.47-18,103.19-8,077.32

Finding the Fourth Proportional to 13,111.47, 18,103.19 and 8,077.32

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Solution

The fourth proportional to 13,111.47, 18,103.19 and 8,077.32 is: 11,152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.47 : 18,103.19 = 8,077.32 : x
  2. Step 2: Convert to fraction form
    13,111.47/18,103.19 = 8,077.32/x
  3. Step 3: Cross multiply
    13,111.47x = 18,103.19 × 8,077.32
  4. Step 4: Simplify right side
    13,111.47x = 146,225,218.26
  5. Step 5: Solve for x
    x = 146,225,218.26/13,111.47
  6. Step 6: Final answer
    x = 11,152.47

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Half scale
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Double scale
Find fourth proportional to 13,112.47, 18,104.57 and 8,078.32
Similar ratio
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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.