Home / 13,090.05-19,635.28-12,425.45

Finding the Fourth Proportional to 13,090.05, 19,635.28 and 12,425.45

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Solution

The fourth proportional to 13,090.05, 19,635.28 and 12,425.45 is: 18,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.05 : 19,635.28 = 12,425.45 : x
  2. Step 2: Convert to fraction form
    13,090.05/19,635.28 = 12,425.45/x
  3. Step 3: Cross multiply
    13,090.05x = 19,635.28 × 12,425.45
  4. Step 4: Simplify right side
    13,090.05x = 243,977,171.85
  5. Step 5: Solve for x
    x = 243,977,171.85/13,090.05
  6. Step 6: Final answer
    x = 18,638.36

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1.5x scale

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.