Home / 39,720.96-59,581.39-10,138.80

Finding the Fourth Proportional to 39,720.96, 59,581.39 and 10,138.80

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Solution

The fourth proportional to 39,720.96, 59,581.39 and 10,138.80 is: 15,208.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.96 : 59,581.39 = 10,138.80 : x
  2. Step 2: Convert to fraction form
    39,720.96/59,581.39 = 10,138.80/x
  3. Step 3: Cross multiply
    39,720.96x = 59,581.39 × 10,138.80
  4. Step 4: Simplify right side
    39,720.96x = 604,083,771.59
  5. Step 5: Solve for x
    x = 604,083,771.59/39,720.96
  6. Step 6: Final answer
    x = 15,208.19

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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.