Home / 12,465.39-18,684.95-4,143.17

Finding the Fourth Proportional to 12,465.39, 18,684.95 and 4,143.17

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Solution

The fourth proportional to 12,465.39, 18,684.95 and 4,143.17 is: 6,210.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.39 : 18,684.95 = 4,143.17 : x
  2. Step 2: Convert to fraction form
    12,465.39/18,684.95 = 4,143.17/x
  3. Step 3: Cross multiply
    12,465.39x = 18,684.95 × 4,143.17
  4. Step 4: Simplify right side
    12,465.39x = 77,414,880.14
  5. Step 5: Solve for x
    x = 77,414,880.14/12,465.39
  6. Step 6: Final answer
    x = 6,210.39

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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.