Home / 21,137.09-31,703.20-7,096.55

Finding the Fourth Proportional to 21,137.09, 31,703.20 and 7,096.55

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Solution

The fourth proportional to 21,137.09, 31,703.20 and 7,096.55 is: 10,644.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.09 : 31,703.20 = 7,096.55 : x
  2. Step 2: Convert to fraction form
    21,137.09/31,703.20 = 7,096.55/x
  3. Step 3: Cross multiply
    21,137.09x = 31,703.20 × 7,096.55
  4. Step 4: Simplify right side
    21,137.09x = 224,983,167.70
  5. Step 5: Solve for x
    x = 224,983,167.70/21,137.09
  6. Step 6: Final answer
    x = 10,644.00

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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.