Home / 20,365.24-30,539.60-8,511.20

Finding the Fourth Proportional to 20,365.24, 30,539.60 and 8,511.20

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Solution

The fourth proportional to 20,365.24, 30,539.60 and 8,511.20 is: 12,763.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.24 : 30,539.60 = 8,511.20 : x
  2. Step 2: Convert to fraction form
    20,365.24/30,539.60 = 8,511.20/x
  3. Step 3: Cross multiply
    20,365.24x = 30,539.60 × 8,511.20
  4. Step 4: Simplify right side
    20,365.24x = 259,928,643.52
  5. Step 5: Solve for x
    x = 259,928,643.52/20,365.24
  6. Step 6: Final answer
    x = 12,763.35

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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.