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Finding the Fourth Proportional to 13,915.55, 20,873.52 and 4,555.50

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Solution

The fourth proportional to 13,915.55, 20,873.52 and 4,555.50 is: 6,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.55 : 20,873.52 = 4,555.50 : x
  2. Step 2: Convert to fraction form
    13,915.55/20,873.52 = 4,555.50/x
  3. Step 3: Cross multiply
    13,915.55x = 20,873.52 × 4,555.50
  4. Step 4: Simplify right side
    13,915.55x = 95,089,320.36
  5. Step 5: Solve for x
    x = 95,089,320.36/13,915.55
  6. Step 6: Final answer
    x = 6,833.32

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1.5x scale

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.