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Finding the Fourth Proportional to 13,795.52, 20,693.20 and 3,407.28

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Solution

The fourth proportional to 13,795.52, 20,693.20 and 3,407.28 is: 5,110.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,795.52 : 20,693.20 = 3,407.28 : x
  2. Step 2: Convert to fraction form
    13,795.52/20,693.20 = 3,407.28/x
  3. Step 3: Cross multiply
    13,795.52x = 20,693.20 × 3,407.28
  4. Step 4: Simplify right side
    13,795.52x = 70,507,526.50
  5. Step 5: Solve for x
    x = 70,507,526.50/13,795.52
  6. Step 6: Final answer
    x = 5,110.90

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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.