Home / 25,428.21-38,100.60-8,779.47

Finding the Fourth Proportional to 25,428.21, 38,100.60 and 8,779.47

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Solution

The fourth proportional to 25,428.21, 38,100.60 and 8,779.47 is: 13,154.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.21 : 38,100.60 = 8,779.47 : x
  2. Step 2: Convert to fraction form
    25,428.21/38,100.60 = 8,779.47/x
  3. Step 3: Cross multiply
    25,428.21x = 38,100.60 × 8,779.47
  4. Step 4: Simplify right side
    25,428.21x = 334,503,074.68
  5. Step 5: Solve for x
    x = 334,503,074.68/25,428.21
  6. Step 6: Final answer
    x = 13,154.80

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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.