Home / 12,479.10-18,705.54-4,979.72

Finding the Fourth Proportional to 12,479.10, 18,705.54 and 4,979.72

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Solution

The fourth proportional to 12,479.10, 18,705.54 and 4,979.72 is: 7,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.10 : 18,705.54 = 4,979.72 : x
  2. Step 2: Convert to fraction form
    12,479.10/18,705.54 = 4,979.72/x
  3. Step 3: Cross multiply
    12,479.10x = 18,705.54 × 4,979.72
  4. Step 4: Simplify right side
    12,479.10x = 93,148,351.65
  5. Step 5: Solve for x
    x = 93,148,351.65/12,479.10
  6. Step 6: Final answer
    x = 7,464.35

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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.