Home / 31,128.10-46,663.80-11,401.90

Finding the Fourth Proportional to 31,128.10, 46,663.80 and 11,401.90

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Solution

The fourth proportional to 31,128.10, 46,663.80 and 11,401.90 is: 17,092.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.10 : 46,663.80 = 11,401.90 : x
  2. Step 2: Convert to fraction form
    31,128.10/46,663.80 = 11,401.90/x
  3. Step 3: Cross multiply
    31,128.10x = 46,663.80 × 11,401.90
  4. Step 4: Simplify right side
    31,128.10x = 532,055,981.22
  5. Step 5: Solve for x
    x = 532,055,981.22/31,128.10
  6. Step 6: Final answer
    x = 17,092.47

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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.