Home / 25,827.60-38,645.40-18,915.60

Finding the Fourth Proportional to 25,827.60, 38,645.40 and 18,915.60

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Solution

The fourth proportional to 25,827.60, 38,645.40 and 18,915.60 is: 28,303.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,827.60 : 38,645.40 = 18,915.60 : x
  2. Step 2: Convert to fraction form
    25,827.60/38,645.40 = 18,915.60/x
  3. Step 3: Cross multiply
    25,827.60x = 38,645.40 × 18,915.60
  4. Step 4: Simplify right side
    25,827.60x = 731,000,928.24
  5. Step 5: Solve for x
    x = 731,000,928.24/25,827.60
  6. Step 6: Final answer
    x = 28,303.09

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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.