Home / 12,920.20-17,827.72-7,614.29

Finding the Fourth Proportional to 12,920.20, 17,827.72 and 7,614.29

Calculator

Solution

The fourth proportional to 12,920.20, 17,827.72 and 7,614.29 is: 10,506.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.20 : 17,827.72 = 7,614.29 : x
  2. Step 2: Convert to fraction form
    12,920.20/17,827.72 = 7,614.29/x
  3. Step 3: Cross multiply
    12,920.20x = 17,827.72 × 7,614.29
  4. Step 4: Simplify right side
    12,920.20x = 135,745,430.12
  5. Step 5: Solve for x
    x = 135,745,430.12/12,920.20
  6. Step 6: Final answer
    x = 10,506.45

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.