Home / 22,785.13-31,438.43-13,219.47

Finding the Fourth Proportional to 22,785.13, 31,438.43 and 13,219.47

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Solution

The fourth proportional to 22,785.13, 31,438.43 and 13,219.47 is: 18,239.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,785.13 : 31,438.43 = 13,219.47 : x
  2. Step 2: Convert to fraction form
    22,785.13/31,438.43 = 13,219.47/x
  3. Step 3: Cross multiply
    22,785.13x = 31,438.43 × 13,219.47
  4. Step 4: Simplify right side
    22,785.13x = 415,599,440.07
  5. Step 5: Solve for x
    x = 415,599,440.07/22,785.13
  6. Step 6: Final answer
    x = 18,239.95

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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.