Home / 21,288.03-31,931.24-5,705.25

Finding the Fourth Proportional to 21,288.03, 31,931.24 and 5,705.25

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Solution

The fourth proportional to 21,288.03, 31,931.24 and 5,705.25 is: 8,557.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.03 : 31,931.24 = 5,705.25 : x
  2. Step 2: Convert to fraction form
    21,288.03/31,931.24 = 5,705.25/x
  3. Step 3: Cross multiply
    21,288.03x = 31,931.24 × 5,705.25
  4. Step 4: Simplify right side
    21,288.03x = 182,175,678.48
  5. Step 5: Solve for x
    x = 182,175,678.48/21,288.03
  6. Step 6: Final answer
    x = 8,557.66

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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.