Home / 31,550.72-47,312.27-11,815.44

Finding the Fourth Proportional to 31,550.72, 47,312.27 and 11,815.44

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Solution

The fourth proportional to 31,550.72, 47,312.27 and 11,815.44 is: 17,717.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,550.72 : 47,312.27 = 11,815.44 : x
  2. Step 2: Convert to fraction form
    31,550.72/47,312.27 = 11,815.44/x
  3. Step 3: Cross multiply
    31,550.72x = 47,312.27 × 11,815.44
  4. Step 4: Simplify right side
    31,550.72x = 559,015,219.98
  5. Step 5: Solve for x
    x = 559,015,219.98/31,550.72
  6. Step 6: Final answer
    x = 17,717.99

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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.