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Finding the Fourth Proportional to 18,779, 25,915.20 and 10,395.68

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Solution

The fourth proportional to 18,779, 25,915.20 and 10,395.68 is: 14,346.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779 : 25,915.20 = 10,395.68 : x
  2. Step 2: Convert to fraction form
    18,779/25,915.20 = 10,395.68/x
  3. Step 3: Cross multiply
    18,779x = 25,915.20 × 10,395.68
  4. Step 4: Simplify right side
    18,779x = 269,406,126.34
  5. Step 5: Solve for x
    x = 269,406,126.34/18,779
  6. Step 6: Final answer
    x = 14,346.14

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1.5x scale

Why These Related Problems?

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