Home / 31,152.70-46,721.76-11,420.56

Finding the Fourth Proportional to 31,152.70, 46,721.76 and 11,420.56

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Solution

The fourth proportional to 31,152.70, 46,721.76 and 11,420.56 is: 17,128.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,152.70 : 46,721.76 = 11,420.56 : x
  2. Step 2: Convert to fraction form
    31,152.70/46,721.76 = 11,420.56/x
  3. Step 3: Cross multiply
    31,152.70x = 46,721.76 × 11,420.56
  4. Step 4: Simplify right side
    31,152.70x = 533,588,663.39
  5. Step 5: Solve for x
    x = 533,588,663.39/31,152.70
  6. Step 6: Final answer
    x = 17,128.17

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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.