Home / 30,012.24-41,378.40-20,564.40

Finding the Fourth Proportional to 30,012.24, 41,378.40 and 20,564.40

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Solution

The fourth proportional to 30,012.24, 41,378.40 and 20,564.40 is: 28,352.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,012.24 : 41,378.40 = 20,564.40 : x
  2. Step 2: Convert to fraction form
    30,012.24/41,378.40 = 20,564.40/x
  3. Step 3: Cross multiply
    30,012.24x = 41,378.40 × 20,564.40
  4. Step 4: Simplify right side
    30,012.24x = 850,921,968.96
  5. Step 5: Solve for x
    x = 850,921,968.96/30,012.24
  6. Step 6: Final answer
    x = 28,352.50

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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.