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Finding the Fourth Proportional to 13,955.05, 20,914.74 and 6,543.16

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Solution

The fourth proportional to 13,955.05, 20,914.74 and 6,543.16 is: 9,806.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.05 : 20,914.74 = 6,543.16 : x
  2. Step 2: Convert to fraction form
    13,955.05/20,914.74 = 6,543.16/x
  3. Step 3: Cross multiply
    13,955.05x = 20,914.74 × 6,543.16
  4. Step 4: Simplify right side
    13,955.05x = 136,848,490.18
  5. Step 5: Solve for x
    x = 136,848,490.18/13,955.05
  6. Step 6: Final answer
    x = 9,806.38

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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.