Home / 21,307.14-31,960.69-5,724.77

Finding the Fourth Proportional to 21,307.14, 31,960.69 and 5,724.77

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Solution

The fourth proportional to 21,307.14, 31,960.69 and 5,724.77 is: 8,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.14 : 31,960.69 = 5,724.77 : x
  2. Step 2: Convert to fraction form
    21,307.14/31,960.69 = 5,724.77/x
  3. Step 3: Cross multiply
    21,307.14x = 31,960.69 × 5,724.77
  4. Step 4: Simplify right side
    21,307.14x = 182,967,439.49
  5. Step 5: Solve for x
    x = 182,967,439.49/21,307.14
  6. Step 6: Final answer
    x = 8,587.14

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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.