Home / 12,439.23-18,656.01-3,554.40

Finding the Fourth Proportional to 12,439.23, 18,656.01 and 3,554.40

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Solution

The fourth proportional to 12,439.23, 18,656.01 and 3,554.40 is: 5,330.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.23 : 18,656.01 = 3,554.40 : x
  2. Step 2: Convert to fraction form
    12,439.23/18,656.01 = 3,554.40/x
  3. Step 3: Cross multiply
    12,439.23x = 18,656.01 × 3,554.40
  4. Step 4: Simplify right side
    12,439.23x = 66,310,921.94
  5. Step 5: Solve for x
    x = 66,310,921.94/12,439.23
  6. Step 6: Final answer
    x = 5,330.79

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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.