Home / 39,708.93-54,792.40-21,804.69

Finding the Fourth Proportional to 39,708.93, 54,792.40 and 21,804.69

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Solution

The fourth proportional to 39,708.93, 54,792.40 and 21,804.69 is: 30,087.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.93 : 54,792.40 = 21,804.69 : x
  2. Step 2: Convert to fraction form
    39,708.93/54,792.40 = 21,804.69/x
  3. Step 3: Cross multiply
    39,708.93x = 54,792.40 × 21,804.69
  4. Step 4: Simplify right side
    39,708.93x = 1,194,731,488.20
  5. Step 5: Solve for x
    x = 1,194,731,488.20/39,708.93
  6. Step 6: Final answer
    x = 30,087.22

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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.