Home / 28,964.34-39,974.04-16,389.90

Finding the Fourth Proportional to 28,964.34, 39,974.04 and 16,389.90

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Solution

The fourth proportional to 28,964.34, 39,974.04 and 16,389.90 is: 22,619.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964.34 : 39,974.04 = 16,389.90 : x
  2. Step 2: Convert to fraction form
    28,964.34/39,974.04 = 16,389.90/x
  3. Step 3: Cross multiply
    28,964.34x = 39,974.04 × 16,389.90
  4. Step 4: Simplify right side
    28,964.34x = 655,170,518.20
  5. Step 5: Solve for x
    x = 655,170,518.20/28,964.34
  6. Step 6: Final answer
    x = 22,619.90

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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.