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Finding the Fourth Proportional to 16,720.84, 25,074.42 and 8,928.28

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Solution

The fourth proportional to 16,720.84, 25,074.42 and 8,928.28 is: 13,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,720.84 : 25,074.42 = 8,928.28 : x
  2. Step 2: Convert to fraction form
    16,720.84/25,074.42 = 8,928.28/x
  3. Step 3: Cross multiply
    16,720.84x = 25,074.42 × 8,928.28
  4. Step 4: Simplify right side
    16,720.84x = 223,871,442.60
  5. Step 5: Solve for x
    x = 223,871,442.60/16,720.84
  6. Step 6: Final answer
    x = 13,388.77

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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.