Home / 39,890.56-59,842.95-13,238.15

Finding the Fourth Proportional to 39,890.56, 59,842.95 and 13,238.15

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Solution

The fourth proportional to 39,890.56, 59,842.95 and 13,238.15 is: 19,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.56 : 59,842.95 = 13,238.15 : x
  2. Step 2: Convert to fraction form
    39,890.56/59,842.95 = 13,238.15/x
  3. Step 3: Cross multiply
    39,890.56x = 59,842.95 × 13,238.15
  4. Step 4: Simplify right side
    39,890.56x = 792,209,948.54
  5. Step 5: Solve for x
    x = 792,209,948.54/39,890.56
  6. Step 6: Final answer
    x = 19,859.58

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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.