Home / 39,720.50-59,580.69-10,138.33

Finding the Fourth Proportional to 39,720.50, 59,580.69 and 10,138.33

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Solution

The fourth proportional to 39,720.50, 59,580.69 and 10,138.33 is: 15,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.50 : 59,580.69 = 10,138.33 : x
  2. Step 2: Convert to fraction form
    39,720.50/59,580.69 = 10,138.33/x
  3. Step 3: Cross multiply
    39,720.50x = 59,580.69 × 10,138.33
  4. Step 4: Simplify right side
    39,720.50x = 604,048,398.94
  5. Step 5: Solve for x
    x = 604,048,398.94/39,720.50
  6. Step 6: Final answer
    x = 15,207.47

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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.