Home / 39,890.10-55,048.71-21,985.76

Finding the Fourth Proportional to 39,890.10, 55,048.71 and 21,985.76

Calculator

Solution

The fourth proportional to 39,890.10, 55,048.71 and 21,985.76 is: 30,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.10 : 55,048.71 = 21,985.76 : x
  2. Step 2: Convert to fraction form
    39,890.10/55,048.71 = 21,985.76/x
  3. Step 3: Cross multiply
    39,890.10x = 55,048.71 × 21,985.76
  4. Step 4: Simplify right side
    39,890.10x = 1,210,287,451.13
  5. Step 5: Solve for x
    x = 1,210,287,451.13/39,890.10
  6. Step 6: Final answer
    x = 30,340.55

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.