Home / 30,420.20-45,629.76-15,620.42

Finding the Fourth Proportional to 30,420.20, 45,629.76 and 15,620.42

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Solution

The fourth proportional to 30,420.20, 45,629.76 and 15,620.42 is: 23,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.20 : 45,629.76 = 15,620.42 : x
  2. Step 2: Convert to fraction form
    30,420.20/45,629.76 = 15,620.42/x
  3. Step 3: Cross multiply
    30,420.20x = 45,629.76 × 15,620.42
  4. Step 4: Simplify right side
    30,420.20x = 712,756,015.70
  5. Step 5: Solve for x
    x = 712,756,015.70/30,420.20
  6. Step 6: Final answer
    x = 23,430.35

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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.