Home / 31,853.05-47,779.27-8,479.49

Finding the Fourth Proportional to 31,853.05, 47,779.27 and 8,479.49

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Solution

The fourth proportional to 31,853.05, 47,779.27 and 8,479.49 is: 12,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,853.05 : 47,779.27 = 8,479.49 : x
  2. Step 2: Convert to fraction form
    31,853.05/47,779.27 = 8,479.49/x
  3. Step 3: Cross multiply
    31,853.05x = 47,779.27 × 8,479.49
  4. Step 4: Simplify right side
    31,853.05x = 405,143,582.08
  5. Step 5: Solve for x
    x = 405,143,582.08/31,853.05
  6. Step 6: Final answer
    x = 12,719.15

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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.