Home / 12,459.25-18,688.57-3,099.29

Finding the Fourth Proportional to 12,459.25, 18,688.57 and 3,099.29

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Solution

The fourth proportional to 12,459.25, 18,688.57 and 3,099.29 is: 4,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.25 : 18,688.57 = 3,099.29 : x
  2. Step 2: Convert to fraction form
    12,459.25/18,688.57 = 3,099.29/x
  3. Step 3: Cross multiply
    12,459.25x = 18,688.57 × 3,099.29
  4. Step 4: Simplify right side
    12,459.25x = 57,921,298.12
  5. Step 5: Solve for x
    x = 57,921,298.12/12,459.25
  6. Step 6: Final answer
    x = 4,648.86

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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.