Home / 20,283.20-30,410.40-7,798.40

Finding the Fourth Proportional to 20,283.20, 30,410.40 and 7,798.40

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Solution

The fourth proportional to 20,283.20, 30,410.40 and 7,798.40 is: 11,692.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.20 : 30,410.40 = 7,798.40 : x
  2. Step 2: Convert to fraction form
    20,283.20/30,410.40 = 7,798.40/x
  3. Step 3: Cross multiply
    20,283.20x = 30,410.40 × 7,798.40
  4. Step 4: Simplify right side
    20,283.20x = 237,152,463.36
  5. Step 5: Solve for x
    x = 237,152,463.36/20,283.20
  6. Step 6: Final answer
    x = 11,692.06

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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.