Home / 12,439.13-18,661.16-3,554.54

Finding the Fourth Proportional to 12,439.13, 18,661.16 and 3,554.54

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Solution

The fourth proportional to 12,439.13, 18,661.16 and 3,554.54 is: 5,332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.13 : 18,661.16 = 3,554.54 : x
  2. Step 2: Convert to fraction form
    12,439.13/18,661.16 = 3,554.54/x
  3. Step 3: Cross multiply
    12,439.13x = 18,661.16 × 3,554.54
  4. Step 4: Simplify right side
    12,439.13x = 66,331,886.32
  5. Step 5: Solve for x
    x = 66,331,886.32/12,439.13
  6. Step 6: Final answer
    x = 5,332.52

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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.