Home / 28,900.20-39,880.32-16,324.14

Finding the Fourth Proportional to 28,900.20, 39,880.32 and 16,324.14

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Solution

The fourth proportional to 28,900.20, 39,880.32 and 16,324.14 is: 22,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,900.20 : 39,880.32 = 16,324.14 : x
  2. Step 2: Convert to fraction form
    28,900.20/39,880.32 = 16,324.14/x
  3. Step 3: Cross multiply
    28,900.20x = 39,880.32 × 16,324.14
  4. Step 4: Simplify right side
    28,900.20x = 651,011,926.92
  5. Step 5: Solve for x
    x = 651,011,926.92/28,900.20
  6. Step 6: Final answer
    x = 22,526.21

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1.5x scale

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.