Home / 39,881.89-59,809.47-20,147.86

Finding the Fourth Proportional to 39,881.89, 59,809.47 and 20,147.86

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Solution

The fourth proportional to 39,881.89, 59,809.47 and 20,147.86 is: 30,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.89 : 59,809.47 = 20,147.86 : x
  2. Step 2: Convert to fraction form
    39,881.89/59,809.47 = 20,147.86/x
  3. Step 3: Cross multiply
    39,881.89x = 59,809.47 × 20,147.86
  4. Step 4: Simplify right side
    39,881.89x = 1,205,032,828.23
  5. Step 5: Solve for x
    x = 1,205,032,828.23/39,881.89
  6. Step 6: Final answer
    x = 30,215.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.