Home / 31,278.84-46,911.78-11,543.91

Finding the Fourth Proportional to 31,278.84, 46,911.78 and 11,543.91

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Solution

The fourth proportional to 31,278.84, 46,911.78 and 11,543.91 is: 17,313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.84 : 46,911.78 = 11,543.91 : x
  2. Step 2: Convert to fraction form
    31,278.84/46,911.78 = 11,543.91/x
  3. Step 3: Cross multiply
    31,278.84x = 46,911.78 × 11,543.91
  4. Step 4: Simplify right side
    31,278.84x = 541,545,366.26
  5. Step 5: Solve for x
    x = 541,545,366.26/31,278.84
  6. Step 6: Final answer
    x = 17,313.47

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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.