Home / 31,896.48-44,009.28-20,712

Finding the Fourth Proportional to 31,896.48, 44,009.28 and 20,712

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Solution

The fourth proportional to 31,896.48, 44,009.28 and 20,712 is: 28,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,896.48 : 44,009.28 = 20,712 : x
  2. Step 2: Convert to fraction form
    31,896.48/44,009.28 = 20,712/x
  3. Step 3: Cross multiply
    31,896.48x = 44,009.28 × 20,712
  4. Step 4: Simplify right side
    31,896.48x = 911,520,207.36
  5. Step 5: Solve for x
    x = 911,520,207.36/31,896.48
  6. Step 6: Final answer
    x = 28,577.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.