Home / 20,686.82-31,038.53-9,447.48

Finding the Fourth Proportional to 20,686.82, 31,038.53 and 9,447.48

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Solution

The fourth proportional to 20,686.82, 31,038.53 and 9,447.48 is: 14,175.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.82 : 31,038.53 = 9,447.48 : x
  2. Step 2: Convert to fraction form
    20,686.82/31,038.53 = 9,447.48/x
  3. Step 3: Cross multiply
    20,686.82x = 31,038.53 × 9,447.48
  4. Step 4: Simplify right side
    20,686.82x = 293,235,844.17
  5. Step 5: Solve for x
    x = 293,235,844.17/20,686.82
  6. Step 6: Final answer
    x = 14,175.01

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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.