Home / 31,514.32-47,271.48-8,142.64

Finding the Fourth Proportional to 31,514.32, 47,271.48 and 8,142.64

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Solution

The fourth proportional to 31,514.32, 47,271.48 and 8,142.64 is: 12,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,514.32 : 47,271.48 = 8,142.64 : x
  2. Step 2: Convert to fraction form
    31,514.32/47,271.48 = 8,142.64/x
  3. Step 3: Cross multiply
    31,514.32x = 47,271.48 × 8,142.64
  4. Step 4: Simplify right side
    31,514.32x = 384,914,643.91
  5. Step 5: Solve for x
    x = 384,914,643.91/31,514.32
  6. Step 6: Final answer
    x = 12,213.96

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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.