Home / 20,752.34-31,128.48-7,605.77

Finding the Fourth Proportional to 20,752.34, 31,128.48 and 7,605.77

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Solution

The fourth proportional to 20,752.34, 31,128.48 and 7,605.77 is: 11,408.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.34 : 31,128.48 = 7,605.77 : x
  2. Step 2: Convert to fraction form
    20,752.34/31,128.48 = 7,605.77/x
  3. Step 3: Cross multiply
    20,752.34x = 31,128.48 × 7,605.77
  4. Step 4: Simplify right side
    20,752.34x = 236,755,903.69
  5. Step 5: Solve for x
    x = 236,755,903.69/20,752.34
  6. Step 6: Final answer
    x = 11,408.64

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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.