Home / 13,851.90-19,111.14-8,186.82

Finding the Fourth Proportional to 13,851.90, 19,111.14 and 8,186.82

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Solution

The fourth proportional to 13,851.90, 19,111.14 and 8,186.82 is: 11,295.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.90 : 19,111.14 = 8,186.82 : x
  2. Step 2: Convert to fraction form
    13,851.90/19,111.14 = 8,186.82/x
  3. Step 3: Cross multiply
    13,851.90x = 19,111.14 × 8,186.82
  4. Step 4: Simplify right side
    13,851.90x = 156,459,463.17
  5. Step 5: Solve for x
    x = 156,459,463.17/13,851.90
  6. Step 6: Final answer
    x = 11,295.16

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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.