Home / 21,966.76-30,312.88-13,015.12

Finding the Fourth Proportional to 21,966.76, 30,312.88 and 13,015.12

Calculator

Solution

The fourth proportional to 21,966.76, 30,312.88 and 13,015.12 is: 17,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.76 : 30,312.88 = 13,015.12 : x
  2. Step 2: Convert to fraction form
    21,966.76/30,312.88 = 13,015.12/x
  3. Step 3: Cross multiply
    21,966.76x = 30,312.88 × 13,015.12
  4. Step 4: Simplify right side
    21,966.76x = 394,525,770.75
  5. Step 5: Solve for x
    x = 394,525,770.75/21,966.76
  6. Step 6: Final answer
    x = 17,960.13

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.