Home / 39,731.70-54,830.10-21,827.07

Finding the Fourth Proportional to 39,731.70, 54,830.10 and 21,827.07

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Solution

The fourth proportional to 39,731.70, 54,830.10 and 21,827.07 is: 30,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,731.70 : 54,830.10 = 21,827.07 : x
  2. Step 2: Convert to fraction form
    39,731.70/54,830.10 = 21,827.07/x
  3. Step 3: Cross multiply
    39,731.70x = 54,830.10 × 21,827.07
  4. Step 4: Simplify right side
    39,731.70x = 1,196,780,430.81
  5. Step 5: Solve for x
    x = 1,196,780,430.81/39,731.70
  6. Step 6: Final answer
    x = 30,121.55

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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.