Home / 13,128.18-19,695.20-4,808.02

Finding the Fourth Proportional to 13,128.18, 19,695.20 and 4,808.02

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Solution

The fourth proportional to 13,128.18, 19,695.20 and 4,808.02 is: 7,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.18 : 19,695.20 = 4,808.02 : x
  2. Step 2: Convert to fraction form
    13,128.18/19,695.20 = 4,808.02/x
  3. Step 3: Cross multiply
    13,128.18x = 19,695.20 × 4,808.02
  4. Step 4: Simplify right side
    13,128.18x = 94,694,915.50
  5. Step 5: Solve for x
    x = 94,694,915.50/13,128.18
  6. Step 6: Final answer
    x = 7,213.10

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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.