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Finding the Fourth Proportional to 39,804.75, 59,705.84 and 13,509.72

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Solution

The fourth proportional to 39,804.75, 59,705.84 and 13,509.72 is: 20,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.75 : 59,705.84 = 13,509.72 : x
  2. Step 2: Convert to fraction form
    39,804.75/59,705.84 = 13,509.72/x
  3. Step 3: Cross multiply
    39,804.75x = 59,705.84 × 13,509.72
  4. Step 4: Simplify right side
    39,804.75x = 806,609,214.54
  5. Step 5: Solve for x
    x = 806,609,214.54/39,804.75
  6. Step 6: Final answer
    x = 20,264.14

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1.5x scale

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.