Home / 39,590.91-54,635.48-21,686.21

Finding the Fourth Proportional to 39,590.91, 54,635.48 and 21,686.21

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Solution

The fourth proportional to 39,590.91, 54,635.48 and 21,686.21 is: 29,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,590.91 : 54,635.48 = 21,686.21 : x
  2. Step 2: Convert to fraction form
    39,590.91/54,635.48 = 21,686.21/x
  3. Step 3: Cross multiply
    39,590.91x = 54,635.48 × 21,686.21
  4. Step 4: Simplify right side
    39,590.91x = 1,184,836,384.30
  5. Step 5: Solve for x
    x = 1,184,836,384.30/39,590.91
  6. Step 6: Final answer
    x = 29,926.98

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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.