Home / 26,629.47-39,915.30-13,129.98

Finding the Fourth Proportional to 26,629.47, 39,915.30 and 13,129.98

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Solution

The fourth proportional to 26,629.47, 39,915.30 and 13,129.98 is: 19,680.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,629.47 : 39,915.30 = 13,129.98 : x
  2. Step 2: Convert to fraction form
    26,629.47/39,915.30 = 13,129.98/x
  3. Step 3: Cross multiply
    26,629.47x = 39,915.30 × 13,129.98
  4. Step 4: Simplify right side
    26,629.47x = 524,087,090.69
  5. Step 5: Solve for x
    x = 524,087,090.69/26,629.47
  6. Step 6: Final answer
    x = 19,680.72

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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.