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Finding the Fourth Proportional to 13,812.93, 20,715.93 and 3,952.26

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Solution

The fourth proportional to 13,812.93, 20,715.93 and 3,952.26 is: 5,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.93 : 20,715.93 = 3,952.26 : x
  2. Step 2: Convert to fraction form
    13,812.93/20,715.93 = 3,952.26/x
  3. Step 3: Cross multiply
    13,812.93x = 20,715.93 × 3,952.26
  4. Step 4: Simplify right side
    13,812.93x = 81,874,741.50
  5. Step 5: Solve for x
    x = 81,874,741.50/13,812.93
  6. Step 6: Final answer
    x = 5,927.40

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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.