Home / 12,417.78-18,620.46-3,983.16

Finding the Fourth Proportional to 12,417.78, 18,620.46 and 3,983.16

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Solution

The fourth proportional to 12,417.78, 18,620.46 and 3,983.16 is: 5,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.78 : 18,620.46 = 3,983.16 : x
  2. Step 2: Convert to fraction form
    12,417.78/18,620.46 = 3,983.16/x
  3. Step 3: Cross multiply
    12,417.78x = 18,620.46 × 3,983.16
  4. Step 4: Simplify right side
    12,417.78x = 74,168,271.45
  5. Step 5: Solve for x
    x = 74,168,271.45/12,417.78
  6. Step 6: Final answer
    x = 5,972.75

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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.