Home / 30,107.95-41,555.88-20,036.81

Finding the Fourth Proportional to 30,107.95, 41,555.88 and 20,036.81

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Solution

The fourth proportional to 30,107.95, 41,555.88 and 20,036.81 is: 27,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,107.95 : 41,555.88 = 20,036.81 : x
  2. Step 2: Convert to fraction form
    30,107.95/41,555.88 = 20,036.81/x
  3. Step 3: Cross multiply
    30,107.95x = 41,555.88 × 20,036.81
  4. Step 4: Simplify right side
    30,107.95x = 832,647,375.83
  5. Step 5: Solve for x
    x = 832,647,375.83/30,107.95
  6. Step 6: Final answer
    x = 27,655.40

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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.