Home / 31,021.28-46,531.19-9,961.28

Finding the Fourth Proportional to 31,021.28, 46,531.19 and 9,961.28

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Solution

The fourth proportional to 31,021.28, 46,531.19 and 9,961.28 is: 14,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,021.28 : 46,531.19 = 9,961.28 : x
  2. Step 2: Convert to fraction form
    31,021.28/46,531.19 = 9,961.28/x
  3. Step 3: Cross multiply
    31,021.28x = 46,531.19 × 9,961.28
  4. Step 4: Simplify right side
    31,021.28x = 463,509,979.67
  5. Step 5: Solve for x
    x = 463,509,979.67/31,021.28
  6. Step 6: Final answer
    x = 14,941.68

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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.