Home / 20,729.77-31,101.23-7,402.47

Finding the Fourth Proportional to 20,729.77, 31,101.23 and 7,402.47

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Solution

The fourth proportional to 20,729.77, 31,101.23 and 7,402.47 is: 11,106.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.77 : 31,101.23 = 7,402.47 : x
  2. Step 2: Convert to fraction form
    20,729.77/31,101.23 = 7,402.47/x
  3. Step 3: Cross multiply
    20,729.77x = 31,101.23 × 7,402.47
  4. Step 4: Simplify right side
    20,729.77x = 230,225,885.03
  5. Step 5: Solve for x
    x = 230,225,885.03/20,729.77
  6. Step 6: Final answer
    x = 11,106.05

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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.