Home / 39,586.74-54,629.70-21,681.72

Finding the Fourth Proportional to 39,586.74, 54,629.70 and 21,681.72

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Solution

The fourth proportional to 39,586.74, 54,629.70 and 21,681.72 is: 29,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,586.74 : 54,629.70 = 21,681.72 : x
  2. Step 2: Convert to fraction form
    39,586.74/54,629.70 = 21,681.72/x
  3. Step 3: Cross multiply
    39,586.74x = 54,629.70 × 21,681.72
  4. Step 4: Simplify right side
    39,586.74x = 1,184,465,859.08
  5. Step 5: Solve for x
    x = 1,184,465,859.08/39,586.74
  6. Step 6: Final answer
    x = 29,920.77

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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.