Home / 39,828.11-59,779.08-20,120.54

Finding the Fourth Proportional to 39,828.11, 59,779.08 and 20,120.54

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Solution

The fourth proportional to 39,828.11, 59,779.08 and 20,120.54 is: 30,199.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,828.11 : 59,779.08 = 20,120.54 : x
  2. Step 2: Convert to fraction form
    39,828.11/59,779.08 = 20,120.54/x
  3. Step 3: Cross multiply
    39,828.11x = 59,779.08 × 20,120.54
  4. Step 4: Simplify right side
    39,828.11x = 1,202,787,071.41
  5. Step 5: Solve for x
    x = 1,202,787,071.41/39,828.11
  6. Step 6: Final answer
    x = 30,199.46

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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.