Home / 20,754.90-31,126.77-7,607.34

Finding the Fourth Proportional to 20,754.90, 31,126.77 and 7,607.34

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Solution

The fourth proportional to 20,754.90, 31,126.77 and 7,607.34 is: 11,408.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.90 : 31,126.77 = 7,607.34 : x
  2. Step 2: Convert to fraction form
    20,754.90/31,126.77 = 7,607.34/x
  3. Step 3: Cross multiply
    20,754.90x = 31,126.77 × 7,607.34
  4. Step 4: Simplify right side
    20,754.90x = 236,791,922.49
  5. Step 5: Solve for x
    x = 236,791,922.49/20,754.90
  6. Step 6: Final answer
    x = 11,408.96

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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.