Home / 12,278.63-18,417.81-4,487.38

Finding the Fourth Proportional to 12,278.63, 18,417.81 and 4,487.38

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Solution

The fourth proportional to 12,278.63, 18,417.81 and 4,487.38 is: 6,731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.63 : 18,417.81 = 4,487.38 : x
  2. Step 2: Convert to fraction form
    12,278.63/18,417.81 = 4,487.38/x
  3. Step 3: Cross multiply
    12,278.63x = 18,417.81 × 4,487.38
  4. Step 4: Simplify right side
    12,278.63x = 82,647,712.24
  5. Step 5: Solve for x
    x = 82,647,712.24/12,278.63
  6. Step 6: Final answer
    x = 6,731.02

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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.