Home / 12,310.47-18,464.08-3,426.39

Finding the Fourth Proportional to 12,310.47, 18,464.08 and 3,426.39

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Solution

The fourth proportional to 12,310.47, 18,464.08 and 3,426.39 is: 5,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.47 : 18,464.08 = 3,426.39 : x
  2. Step 2: Convert to fraction form
    12,310.47/18,464.08 = 3,426.39/x
  3. Step 3: Cross multiply
    12,310.47x = 18,464.08 × 3,426.39
  4. Step 4: Simplify right side
    12,310.47x = 63,265,139.07
  5. Step 5: Solve for x
    x = 63,265,139.07/12,310.47
  6. Step 6: Final answer
    x = 5,139.13

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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.