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Finding the Fourth Proportional to 15,725.21, 23,593.49 and 7,928.15

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Solution

The fourth proportional to 15,725.21, 23,593.49 and 7,928.15 is: 11,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.21 : 23,593.49 = 7,928.15 : x
  2. Step 2: Convert to fraction form
    15,725.21/23,593.49 = 7,928.15/x
  3. Step 3: Cross multiply
    15,725.21x = 23,593.49 × 7,928.15
  4. Step 4: Simplify right side
    15,725.21x = 187,052,688.10
  5. Step 5: Solve for x
    x = 187,052,688.10/15,725.21
  6. Step 6: Final answer
    x = 11,895.08

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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.