Home / 28,633.10-42,956.96-8,911.80

Finding the Fourth Proportional to 28,633.10, 42,956.96 and 8,911.80

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Solution

The fourth proportional to 28,633.10, 42,956.96 and 8,911.80 is: 13,369.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,633.10 : 42,956.96 = 8,911.80 : x
  2. Step 2: Convert to fraction form
    28,633.10/42,956.96 = 8,911.80/x
  3. Step 3: Cross multiply
    28,633.10x = 42,956.96 × 8,911.80
  4. Step 4: Simplify right side
    28,633.10x = 382,823,791.57
  5. Step 5: Solve for x
    x = 382,823,791.57/28,633.10
  6. Step 6: Final answer
    x = 13,369.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.