Home / 39,690.24-59,531.74-13,395.21

Finding the Fourth Proportional to 39,690.24, 59,531.74 and 13,395.21

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Solution

The fourth proportional to 39,690.24, 59,531.74 and 13,395.21 is: 20,091.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,690.24 : 59,531.74 = 13,395.21 : x
  2. Step 2: Convert to fraction form
    39,690.24/59,531.74 = 13,395.21/x
  3. Step 3: Cross multiply
    39,690.24x = 59,531.74 × 13,395.21
  4. Step 4: Simplify right side
    39,690.24x = 797,440,125.48
  5. Step 5: Solve for x
    x = 797,440,125.48/39,690.24
  6. Step 6: Final answer
    x = 20,091.59

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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.