Home / 28,886.36-39,838.22-18,811

Finding the Fourth Proportional to 28,886.36, 39,838.22 and 18,811

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Solution

The fourth proportional to 28,886.36, 39,838.22 and 18,811 is: 25,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.36 : 39,838.22 = 18,811 : x
  2. Step 2: Convert to fraction form
    28,886.36/39,838.22 = 18,811/x
  3. Step 3: Cross multiply
    28,886.36x = 39,838.22 × 18,811
  4. Step 4: Simplify right side
    28,886.36x = 749,396,756.42
  5. Step 5: Solve for x
    x = 749,396,756.42/28,886.36
  6. Step 6: Final answer
    x = 25,942.93

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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.