Home / 13,848.28-19,111.20-7,881

Finding the Fourth Proportional to 13,848.28, 19,111.20 and 7,881

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Solution

The fourth proportional to 13,848.28, 19,111.20 and 7,881 is: 10,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,848.28 : 19,111.20 = 7,881 : x
  2. Step 2: Convert to fraction form
    13,848.28/19,111.20 = 7,881/x
  3. Step 3: Cross multiply
    13,848.28x = 19,111.20 × 7,881
  4. Step 4: Simplify right side
    13,848.28x = 150,615,367.20
  5. Step 5: Solve for x
    x = 150,615,367.20/13,848.28
  6. Step 6: Final answer
    x = 10,876.11

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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.