Home / 21,199.08-31,797.81-8,715.63

Finding the Fourth Proportional to 21,199.08, 31,797.81 and 8,715.63

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Solution

The fourth proportional to 21,199.08, 31,797.81 and 8,715.63 is: 13,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.08 : 31,797.81 = 8,715.63 : x
  2. Step 2: Convert to fraction form
    21,199.08/31,797.81 = 8,715.63/x
  3. Step 3: Cross multiply
    21,199.08x = 31,797.81 × 8,715.63
  4. Step 4: Simplify right side
    21,199.08x = 277,137,946.77
  5. Step 5: Solve for x
    x = 277,137,946.77/21,199.08
  6. Step 6: Final answer
    x = 13,073.11

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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.