Home / 13,819.62-19,071.75-7,851.18

Finding the Fourth Proportional to 13,819.62, 19,071.75 and 7,851.18

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Solution

The fourth proportional to 13,819.62, 19,071.75 and 7,851.18 is: 10,835.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.62 : 19,071.75 = 7,851.18 : x
  2. Step 2: Convert to fraction form
    13,819.62/19,071.75 = 7,851.18/x
  3. Step 3: Cross multiply
    13,819.62x = 19,071.75 × 7,851.18
  4. Step 4: Simplify right side
    13,819.62x = 149,735,742.17
  5. Step 5: Solve for x
    x = 149,735,742.17/13,819.62
  6. Step 6: Final answer
    x = 10,835.01

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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.