Home / 13,587.75-18,751.10-7,998.75

Finding the Fourth Proportional to 13,587.75, 18,751.10 and 7,998.75

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Solution

The fourth proportional to 13,587.75, 18,751.10 and 7,998.75 is: 11,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.75 : 18,751.10 = 7,998.75 : x
  2. Step 2: Convert to fraction form
    13,587.75/18,751.10 = 7,998.75/x
  3. Step 3: Cross multiply
    13,587.75x = 18,751.10 × 7,998.75
  4. Step 4: Simplify right side
    13,587.75x = 149,985,321.13
  5. Step 5: Solve for x
    x = 149,985,321.13/13,587.75
  6. Step 6: Final answer
    x = 11,038.28

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Double scale
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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.