Home / 10,420.38-14,380.20-5,705.10

Finding the Fourth Proportional to 10,420.38, 14,380.20 and 5,705.10

Calculator

Solution

The fourth proportional to 10,420.38, 14,380.20 and 5,705.10 is: 7,873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.38 : 14,380.20 = 5,705.10 : x
  2. Step 2: Convert to fraction form
    10,420.38/14,380.20 = 5,705.10/x
  3. Step 3: Cross multiply
    10,420.38x = 14,380.20 × 5,705.10
  4. Step 4: Simplify right side
    10,420.38x = 82,040,479.02
  5. Step 5: Solve for x
    x = 82,040,479.02/10,420.38
  6. Step 6: Final answer
    x = 7,873.08

Related Problems

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.