Home / 28,886.07-43,336.40-8,109.57

Finding the Fourth Proportional to 28,886.07, 43,336.40 and 8,109.57

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Solution

The fourth proportional to 28,886.07, 43,336.40 and 8,109.57 is: 12,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.07 : 43,336.40 = 8,109.57 : x
  2. Step 2: Convert to fraction form
    28,886.07/43,336.40 = 8,109.57/x
  3. Step 3: Cross multiply
    28,886.07x = 43,336.40 × 8,109.57
  4. Step 4: Simplify right side
    28,886.07x = 351,439,528.80
  5. Step 5: Solve for x
    x = 351,439,528.80/28,886.07
  6. Step 6: Final answer
    x = 12,166.40

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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.