Home / 39,065.55-53,906.61-21,834.74

Finding the Fourth Proportional to 39,065.55, 53,906.61 and 21,834.74

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Solution

The fourth proportional to 39,065.55, 53,906.61 and 21,834.74 is: 30,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,065.55 : 53,906.61 = 21,834.74 : x
  2. Step 2: Convert to fraction form
    39,065.55/53,906.61 = 21,834.74/x
  3. Step 3: Cross multiply
    39,065.55x = 53,906.61 × 21,834.74
  4. Step 4: Simplify right side
    39,065.55x = 1,177,036,813.63
  5. Step 5: Solve for x
    x = 1,177,036,813.63/39,065.55
  6. Step 6: Final answer
    x = 30,129.79

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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.