Home / 12,405.06-18,607.56-3,639.96

Finding the Fourth Proportional to 12,405.06, 18,607.56 and 3,639.96

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Solution

The fourth proportional to 12,405.06, 18,607.56 and 3,639.96 is: 5,459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.06 : 18,607.56 = 3,639.96 : x
  2. Step 2: Convert to fraction form
    12,405.06/18,607.56 = 3,639.96/x
  3. Step 3: Cross multiply
    12,405.06x = 18,607.56 × 3,639.96
  4. Step 4: Simplify right side
    12,405.06x = 67,730,774.10
  5. Step 5: Solve for x
    x = 67,730,774.10/12,405.06
  6. Step 6: Final answer
    x = 5,459.93

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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.