Home / 12,405.82-18,603.87-4,612.18

Finding the Fourth Proportional to 12,405.82, 18,603.87 and 4,612.18

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Solution

The fourth proportional to 12,405.82, 18,603.87 and 4,612.18 is: 6,916.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.82 : 18,603.87 = 4,612.18 : x
  2. Step 2: Convert to fraction form
    12,405.82/18,603.87 = 4,612.18/x
  3. Step 3: Cross multiply
    12,405.82x = 18,603.87 × 4,612.18
  4. Step 4: Simplify right side
    12,405.82x = 85,804,397.14
  5. Step 5: Solve for x
    x = 85,804,397.14/12,405.82
  6. Step 6: Final answer
    x = 6,916.46

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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.