Home / 30,420.55-45,599.77-20,560.83

Finding the Fourth Proportional to 30,420.55, 45,599.77 and 20,560.83

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Solution

The fourth proportional to 30,420.55, 45,599.77 and 20,560.83 is: 30,820.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.55 : 45,599.77 = 20,560.83 : x
  2. Step 2: Convert to fraction form
    30,420.55/45,599.77 = 20,560.83/x
  3. Step 3: Cross multiply
    30,420.55x = 45,599.77 × 20,560.83
  4. Step 4: Simplify right side
    30,420.55x = 937,569,119.01
  5. Step 5: Solve for x
    x = 937,569,119.01/30,420.55
  6. Step 6: Final answer
    x = 30,820.26

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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.