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Finding the Fourth Proportional to 18,779.69, 25,915.75 and 10,281.71

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Solution

The fourth proportional to 18,779.69, 25,915.75 and 10,281.71 is: 14,188.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.69 : 25,915.75 = 10,281.71 : x
  2. Step 2: Convert to fraction form
    18,779.69/25,915.75 = 10,281.71/x
  3. Step 3: Cross multiply
    18,779.69x = 25,915.75 × 10,281.71
  4. Step 4: Simplify right side
    18,779.69x = 266,458,225.93
  5. Step 5: Solve for x
    x = 266,458,225.93/18,779.69
  6. Step 6: Final answer
    x = 14,188.64

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.