Home / 39,312.72-58,986.36-13,021.20

Finding the Fourth Proportional to 39,312.72, 58,986.36 and 13,021.20

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Solution

The fourth proportional to 39,312.72, 58,986.36 and 13,021.20 is: 19,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,312.72 : 58,986.36 = 13,021.20 : x
  2. Step 2: Convert to fraction form
    39,312.72/58,986.36 = 13,021.20/x
  3. Step 3: Cross multiply
    39,312.72x = 58,986.36 × 13,021.20
  4. Step 4: Simplify right side
    39,312.72x = 768,073,190.83
  5. Step 5: Solve for x
    x = 768,073,190.83/39,312.72
  6. Step 6: Final answer
    x = 19,537.52

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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.