Home / 20,707.22-31,061.86-5,918.31

Finding the Fourth Proportional to 20,707.22, 31,061.86 and 5,918.31

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Solution

The fourth proportional to 20,707.22, 31,061.86 and 5,918.31 is: 8,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.22 : 31,061.86 = 5,918.31 : x
  2. Step 2: Convert to fraction form
    20,707.22/31,061.86 = 5,918.31/x
  3. Step 3: Cross multiply
    20,707.22x = 31,061.86 × 5,918.31
  4. Step 4: Simplify right side
    20,707.22x = 183,833,701.86
  5. Step 5: Solve for x
    x = 183,833,701.86/20,707.22
  6. Step 6: Final answer
    x = 8,877.76

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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.