Home / 31,493.42-47,240.48-13,479.20

Finding the Fourth Proportional to 31,493.42, 47,240.48 and 13,479.20

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Solution

The fourth proportional to 31,493.42, 47,240.48 and 13,479.20 is: 20,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,493.42 : 47,240.48 = 13,479.20 : x
  2. Step 2: Convert to fraction form
    31,493.42/47,240.48 = 13,479.20/x
  3. Step 3: Cross multiply
    31,493.42x = 47,240.48 × 13,479.20
  4. Step 4: Simplify right side
    31,493.42x = 636,763,878.02
  5. Step 5: Solve for x
    x = 636,763,878.02/31,493.42
  6. Step 6: Final answer
    x = 20,218.95

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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.