Home / 31,440.99-43,369.60-19,343.54

Finding the Fourth Proportional to 31,440.99, 43,369.60 and 19,343.54

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Solution

The fourth proportional to 31,440.99, 43,369.60 and 19,343.54 is: 26,682.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.99 : 43,369.60 = 19,343.54 : x
  2. Step 2: Convert to fraction form
    31,440.99/43,369.60 = 19,343.54/x
  3. Step 3: Cross multiply
    31,440.99x = 43,369.60 × 19,343.54
  4. Step 4: Simplify right side
    31,440.99x = 838,921,495.67
  5. Step 5: Solve for x
    x = 838,921,495.67/31,440.99
  6. Step 6: Final answer
    x = 26,682.41

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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.