Home / 28,746.07-39,647.06-18,677.78

Finding the Fourth Proportional to 28,746.07, 39,647.06 and 18,677.78

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Solution

The fourth proportional to 28,746.07, 39,647.06 and 18,677.78 is: 25,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.07 : 39,647.06 = 18,677.78 : x
  2. Step 2: Convert to fraction form
    28,746.07/39,647.06 = 18,677.78/x
  3. Step 3: Cross multiply
    28,746.07x = 39,647.06 × 18,677.78
  4. Step 4: Simplify right side
    28,746.07x = 740,519,064.33
  5. Step 5: Solve for x
    x = 740,519,064.33/28,746.07
  6. Step 6: Final answer
    x = 25,760.71

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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.