Home / 21,120.16-31,677.36-5,536.48

Finding the Fourth Proportional to 21,120.16, 31,677.36 and 5,536.48

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Solution

The fourth proportional to 21,120.16, 31,677.36 and 5,536.48 is: 8,303.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.16 : 31,677.36 = 5,536.48 : x
  2. Step 2: Convert to fraction form
    21,120.16/31,677.36 = 5,536.48/x
  3. Step 3: Cross multiply
    21,120.16x = 31,677.36 × 5,536.48
  4. Step 4: Simplify right side
    21,120.16x = 175,381,070.09
  5. Step 5: Solve for x
    x = 175,381,070.09/21,120.16
  6. Step 6: Final answer
    x = 8,303.97

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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.