Home / 28,023.87-42,038.90-13,987.43

Finding the Fourth Proportional to 28,023.87, 42,038.90 and 13,987.43

Calculator

Solution

The fourth proportional to 28,023.87, 42,038.90 and 13,987.43 is: 20,982.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.87 : 42,038.90 = 13,987.43 : x
  2. Step 2: Convert to fraction form
    28,023.87/42,038.90 = 13,987.43/x
  3. Step 3: Cross multiply
    28,023.87x = 42,038.90 × 13,987.43
  4. Step 4: Simplify right side
    28,023.87x = 588,016,337.46
  5. Step 5: Solve for x
    x = 588,016,337.46/28,023.87
  6. Step 6: Final answer
    x = 20,982.69

Related Problems

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.