Home / 28,226.50-38,978.35-18,172.04

Finding the Fourth Proportional to 28,226.50, 38,978.35 and 18,172.04

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Solution

The fourth proportional to 28,226.50, 38,978.35 and 18,172.04 is: 25,094.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,226.50 : 38,978.35 = 18,172.04 : x
  2. Step 2: Convert to fraction form
    28,226.50/38,978.35 = 18,172.04/x
  3. Step 3: Cross multiply
    28,226.50x = 38,978.35 × 18,172.04
  4. Step 4: Simplify right side
    28,226.50x = 708,315,895.01
  5. Step 5: Solve for x
    x = 708,315,895.01/28,226.50
  6. Step 6: Final answer
    x = 25,094.01

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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.