Home / 13,860.90-19,127.30-7,892.54

Finding the Fourth Proportional to 13,860.90, 19,127.30 and 7,892.54

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Solution

The fourth proportional to 13,860.90, 19,127.30 and 7,892.54 is: 10,891.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.90 : 19,127.30 = 7,892.54 : x
  2. Step 2: Convert to fraction form
    13,860.90/19,127.30 = 7,892.54/x
  3. Step 3: Cross multiply
    13,860.90x = 19,127.30 × 7,892.54
  4. Step 4: Simplify right side
    13,860.90x = 150,962,980.34
  5. Step 5: Solve for x
    x = 150,962,980.34/13,860.90
  6. Step 6: Final answer
    x = 10,891.28

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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.