Home / 39,756.56-54,864.60-21,853.28

Finding the Fourth Proportional to 39,756.56, 54,864.60 and 21,853.28

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Solution

The fourth proportional to 39,756.56, 54,864.60 and 21,853.28 is: 30,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.56 : 54,864.60 = 21,853.28 : x
  2. Step 2: Convert to fraction form
    39,756.56/54,864.60 = 21,853.28/x
  3. Step 3: Cross multiply
    39,756.56x = 54,864.60 × 21,853.28
  4. Step 4: Simplify right side
    39,756.56x = 1,198,971,465.89
  5. Step 5: Solve for x
    x = 1,198,971,465.89/39,756.56
  6. Step 6: Final answer
    x = 30,157.83

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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.