Home / 31,663.90-43,696.64-18,237.56

Finding the Fourth Proportional to 31,663.90, 43,696.64 and 18,237.56

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Solution

The fourth proportional to 31,663.90, 43,696.64 and 18,237.56 is: 25,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,663.90 : 43,696.64 = 18,237.56 : x
  2. Step 2: Convert to fraction form
    31,663.90/43,696.64 = 18,237.56/x
  3. Step 3: Cross multiply
    31,663.90x = 43,696.64 × 18,237.56
  4. Step 4: Simplify right side
    31,663.90x = 796,920,002.61
  5. Step 5: Solve for x
    x = 796,920,002.61/31,663.90
  6. Step 6: Final answer
    x = 25,168.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.