Home / 13,723.62-18,938.40-7,755.10

Finding the Fourth Proportional to 13,723.62, 18,938.40 and 7,755.10

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Solution

The fourth proportional to 13,723.62, 18,938.40 and 7,755.10 is: 10,701.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.62 : 18,938.40 = 7,755.10 : x
  2. Step 2: Convert to fraction form
    13,723.62/18,938.40 = 7,755.10/x
  3. Step 3: Cross multiply
    13,723.62x = 18,938.40 × 7,755.10
  4. Step 4: Simplify right side
    13,723.62x = 146,869,185.84
  5. Step 5: Solve for x
    x = 146,869,185.84/13,723.62
  6. Step 6: Final answer
    x = 10,701.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.