Home / 39,406.20-59,109.38-13,111.18

Finding the Fourth Proportional to 39,406.20, 59,109.38 and 13,111.18

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Solution

The fourth proportional to 39,406.20, 59,109.38 and 13,111.18 is: 19,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.20 : 59,109.38 = 13,111.18 : x
  2. Step 2: Convert to fraction form
    39,406.20/59,109.38 = 13,111.18/x
  3. Step 3: Cross multiply
    39,406.20x = 59,109.38 × 13,111.18
  4. Step 4: Simplify right side
    39,406.20x = 774,993,720.87
  5. Step 5: Solve for x
    x = 774,993,720.87/39,406.20
  6. Step 6: Final answer
    x = 19,666.80

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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.