Home / 20,938.03-31,384.94-6,894.38

Finding the Fourth Proportional to 20,938.03, 31,384.94 and 6,894.38

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Solution

The fourth proportional to 20,938.03, 31,384.94 and 6,894.38 is: 10,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.03 : 31,384.94 = 6,894.38 : x
  2. Step 2: Convert to fraction form
    20,938.03/31,384.94 = 6,894.38/x
  3. Step 3: Cross multiply
    20,938.03x = 31,384.94 × 6,894.38
  4. Step 4: Simplify right side
    20,938.03x = 216,379,746.63
  5. Step 5: Solve for x
    x = 216,379,746.63/20,938.03
  6. Step 6: Final answer
    x = 10,334.29

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1.5x scale

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.