Home / 12,837.64-19,255.50-7,639

Finding the Fourth Proportional to 12,837.64, 19,255.50 and 7,639

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Solution

The fourth proportional to 12,837.64, 19,255.50 and 7,639 is: 11,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,837.64 : 19,255.50 = 7,639 : x
  2. Step 2: Convert to fraction form
    12,837.64/19,255.50 = 7,639/x
  3. Step 3: Cross multiply
    12,837.64x = 19,255.50 × 7,639
  4. Step 4: Simplify right side
    12,837.64x = 147,092,764.50
  5. Step 5: Solve for x
    x = 147,092,764.50/12,837.64
  6. Step 6: Final answer
    x = 11,457.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.