Home / 12,459.72-18,679.40-5,800.39

Finding the Fourth Proportional to 12,459.72, 18,679.40 and 5,800.39

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Solution

The fourth proportional to 12,459.72, 18,679.40 and 5,800.39 is: 8,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.72 : 18,679.40 = 5,800.39 : x
  2. Step 2: Convert to fraction form
    12,459.72/18,679.40 = 5,800.39/x
  3. Step 3: Cross multiply
    12,459.72x = 18,679.40 × 5,800.39
  4. Step 4: Simplify right side
    12,459.72x = 108,347,804.97
  5. Step 5: Solve for x
    x = 108,347,804.97/12,459.72
  6. Step 6: Final answer
    x = 8,695.85

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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.