Home / 39,139.42-54,015.07-22,143.65

Finding the Fourth Proportional to 39,139.42, 54,015.07 and 22,143.65

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Solution

The fourth proportional to 39,139.42, 54,015.07 and 22,143.65 is: 30,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.42 : 54,015.07 = 22,143.65 : x
  2. Step 2: Convert to fraction form
    39,139.42/54,015.07 = 22,143.65/x
  3. Step 3: Cross multiply
    39,139.42x = 54,015.07 × 22,143.65
  4. Step 4: Simplify right side
    39,139.42x = 1,196,090,804.81
  5. Step 5: Solve for x
    x = 1,196,090,804.81/39,139.42
  6. Step 6: Final answer
    x = 30,559.75

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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.