Home / 12,345.11-18,515.28-4,025.45

Finding the Fourth Proportional to 12,345.11, 18,515.28 and 4,025.45

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Solution

The fourth proportional to 12,345.11, 18,515.28 and 4,025.45 is: 6,037.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.11 : 18,515.28 = 4,025.45 : x
  2. Step 2: Convert to fraction form
    12,345.11/18,515.28 = 4,025.45/x
  3. Step 3: Cross multiply
    12,345.11x = 18,515.28 × 4,025.45
  4. Step 4: Simplify right side
    12,345.11x = 74,532,291.11
  5. Step 5: Solve for x
    x = 74,532,291.11/12,345.11
  6. Step 6: Final answer
    x = 6,037.39

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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.