Home / 31,536.72-47,348.28-19,815.12

Finding the Fourth Proportional to 31,536.72, 47,348.28 and 19,815.12

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Solution

The fourth proportional to 31,536.72, 47,348.28 and 19,815.12 is: 29,749.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,536.72 : 47,348.28 = 19,815.12 : x
  2. Step 2: Convert to fraction form
    31,536.72/47,348.28 = 19,815.12/x
  3. Step 3: Cross multiply
    31,536.72x = 47,348.28 × 19,815.12
  4. Step 4: Simplify right side
    31,536.72x = 938,211,849.99
  5. Step 5: Solve for x
    x = 938,211,849.99/31,536.72
  6. Step 6: Final answer
    x = 29,749.82

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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.