Home / 20,748.40-31,104.06-9,052.36

Finding the Fourth Proportional to 20,748.40, 31,104.06 and 9,052.36

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Solution

The fourth proportional to 20,748.40, 31,104.06 and 9,052.36 is: 13,570.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.40 : 31,104.06 = 9,052.36 : x
  2. Step 2: Convert to fraction form
    20,748.40/31,104.06 = 9,052.36/x
  3. Step 3: Cross multiply
    20,748.40x = 31,104.06 × 9,052.36
  4. Step 4: Simplify right side
    20,748.40x = 281,565,148.58
  5. Step 5: Solve for x
    x = 281,565,148.58/20,748.40
  6. Step 6: Final answer
    x = 13,570.45

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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.