Home / 13,887.66-19,181.36-9,403.64

Finding the Fourth Proportional to 13,887.66, 19,181.36 and 9,403.64

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Solution

The fourth proportional to 13,887.66, 19,181.36 and 9,403.64 is: 12,988.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.66 : 19,181.36 = 9,403.64 : x
  2. Step 2: Convert to fraction form
    13,887.66/19,181.36 = 9,403.64/x
  3. Step 3: Cross multiply
    13,887.66x = 19,181.36 × 9,403.64
  4. Step 4: Simplify right side
    13,887.66x = 180,374,531.75
  5. Step 5: Solve for x
    x = 180,374,531.75/13,887.66
  6. Step 6: Final answer
    x = 12,988.12

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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.