Home / 21,931.50-30,265.88-12,500.67

Finding the Fourth Proportional to 21,931.50, 30,265.88 and 12,500.67

Calculator

Solution

The fourth proportional to 21,931.50, 30,265.88 and 12,500.67 is: 17,251.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.50 : 30,265.88 = 12,500.67 : x
  2. Step 2: Convert to fraction form
    21,931.50/30,265.88 = 12,500.67/x
  3. Step 3: Cross multiply
    21,931.50x = 30,265.88 × 12,500.67
  4. Step 4: Simplify right side
    21,931.50x = 378,343,715.64
  5. Step 5: Solve for x
    x = 378,343,715.64/21,931.50
  6. Step 6: Final answer
    x = 17,251.16

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.