Home / 13,819.66-19,071.35-7,851.50

Finding the Fourth Proportional to 13,819.66, 19,071.35 and 7,851.50

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Solution

The fourth proportional to 13,819.66, 19,071.35 and 7,851.50 is: 10,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.66 : 19,071.35 = 7,851.50 : x
  2. Step 2: Convert to fraction form
    13,819.66/19,071.35 = 7,851.50/x
  3. Step 3: Cross multiply
    13,819.66x = 19,071.35 × 7,851.50
  4. Step 4: Simplify right side
    13,819.66x = 149,738,704.53
  5. Step 5: Solve for x
    x = 149,738,704.53/13,819.66
  6. Step 6: Final answer
    x = 10,835.19

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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.