Home / 39,591.61-54,636.42-21,686.66

Finding the Fourth Proportional to 39,591.61, 54,636.42 and 21,686.66

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Solution

The fourth proportional to 39,591.61, 54,636.42 and 21,686.66 is: 29,927.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,591.61 : 54,636.42 = 21,686.66 : x
  2. Step 2: Convert to fraction form
    39,591.61/54,636.42 = 21,686.66/x
  3. Step 3: Cross multiply
    39,591.61x = 54,636.42 × 21,686.66
  4. Step 4: Simplify right side
    39,591.61x = 1,184,881,464.16
  5. Step 5: Solve for x
    x = 1,184,881,464.16/39,591.61
  6. Step 6: Final answer
    x = 29,927.59

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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.