Home / 20,178.57-30,268.01-7,030.90

Finding the Fourth Proportional to 20,178.57, 30,268.01 and 7,030.90

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Solution

The fourth proportional to 20,178.57, 30,268.01 and 7,030.90 is: 10,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.57 : 30,268.01 = 7,030.90 : x
  2. Step 2: Convert to fraction form
    20,178.57/30,268.01 = 7,030.90/x
  3. Step 3: Cross multiply
    20,178.57x = 30,268.01 × 7,030.90
  4. Step 4: Simplify right side
    20,178.57x = 212,811,351.51
  5. Step 5: Solve for x
    x = 212,811,351.51/20,178.57
  6. Step 6: Final answer
    x = 10,546.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.