Home / 20,748.15-31,123.98-8,902.44

Finding the Fourth Proportional to 20,748.15, 31,123.98 and 8,902.44

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Solution

The fourth proportional to 20,748.15, 31,123.98 and 8,902.44 is: 13,354.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.15 : 31,123.98 = 8,902.44 : x
  2. Step 2: Convert to fraction form
    20,748.15/31,123.98 = 8,902.44/x
  3. Step 3: Cross multiply
    20,748.15x = 31,123.98 × 8,902.44
  4. Step 4: Simplify right side
    20,748.15x = 277,079,364.51
  5. Step 5: Solve for x
    x = 277,079,364.51/20,748.15
  6. Step 6: Final answer
    x = 13,354.41

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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.