Home / 31,618.96-47,418.36-12,898.96

Finding the Fourth Proportional to 31,618.96, 47,418.36 and 12,898.96

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Solution

The fourth proportional to 31,618.96, 47,418.36 and 12,898.96 is: 19,344.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.96 : 47,418.36 = 12,898.96 : x
  2. Step 2: Convert to fraction form
    31,618.96/47,418.36 = 12,898.96/x
  3. Step 3: Cross multiply
    31,618.96x = 47,418.36 × 12,898.96
  4. Step 4: Simplify right side
    31,618.96x = 611,647,528.91
  5. Step 5: Solve for x
    x = 611,647,528.91/31,618.96
  6. Step 6: Final answer
    x = 19,344.33

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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.