Home / 31,632.58-47,448.87-12,921.45

Finding the Fourth Proportional to 31,632.58, 47,448.87 and 12,921.45

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Solution

The fourth proportional to 31,632.58, 47,448.87 and 12,921.45 is: 19,382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,632.58 : 47,448.87 = 12,921.45 : x
  2. Step 2: Convert to fraction form
    31,632.58/47,448.87 = 12,921.45/x
  3. Step 3: Cross multiply
    31,632.58x = 47,448.87 × 12,921.45
  4. Step 4: Simplify right side
    31,632.58x = 613,108,201.26
  5. Step 5: Solve for x
    x = 613,108,201.26/31,632.58
  6. Step 6: Final answer
    x = 19,382.18

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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.