Home / 39,586.64-54,627.62-21,681.72

Finding the Fourth Proportional to 39,586.64, 54,627.62 and 21,681.72

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Solution

The fourth proportional to 39,586.64, 54,627.62 and 21,681.72 is: 29,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,586.64 : 54,627.62 = 21,681.72 : x
  2. Step 2: Convert to fraction form
    39,586.64/54,627.62 = 21,681.72/x
  3. Step 3: Cross multiply
    39,586.64x = 54,627.62 × 21,681.72
  4. Step 4: Simplify right side
    39,586.64x = 1,184,420,652.70
  5. Step 5: Solve for x
    x = 1,184,420,652.70/39,586.64
  6. Step 6: Final answer
    x = 29,919.71

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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.