Home / 39,125.55-53,993.18-21,220.47

Finding the Fourth Proportional to 39,125.55, 53,993.18 and 21,220.47

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Solution

The fourth proportional to 39,125.55, 53,993.18 and 21,220.47 is: 29,284.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,125.55 : 53,993.18 = 21,220.47 : x
  2. Step 2: Convert to fraction form
    39,125.55/53,993.18 = 21,220.47/x
  3. Step 3: Cross multiply
    39,125.55x = 53,993.18 × 21,220.47
  4. Step 4: Simplify right side
    39,125.55x = 1,145,760,656.39
  5. Step 5: Solve for x
    x = 1,145,760,656.39/39,125.55
  6. Step 6: Final answer
    x = 29,284.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.