Home / 20,178.36-30,259.80-7,027.20

Finding the Fourth Proportional to 20,178.36, 30,259.80 and 7,027.20

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Solution

The fourth proportional to 20,178.36, 30,259.80 and 7,027.20 is: 10,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.36 : 30,259.80 = 7,027.20 : x
  2. Step 2: Convert to fraction form
    20,178.36/30,259.80 = 7,027.20/x
  3. Step 3: Cross multiply
    20,178.36x = 30,259.80 × 7,027.20
  4. Step 4: Simplify right side
    20,178.36x = 212,641,666.56
  5. Step 5: Solve for x
    x = 212,641,666.56/20,178.36
  6. Step 6: Final answer
    x = 10,538.10

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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.