Home / 28,608.09-39,477.78-15,860.49

Finding the Fourth Proportional to 28,608.09, 39,477.78 and 15,860.49

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Solution

The fourth proportional to 28,608.09, 39,477.78 and 15,860.49 is: 21,886.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.09 : 39,477.78 = 15,860.49 : x
  2. Step 2: Convert to fraction form
    28,608.09/39,477.78 = 15,860.49/x
  3. Step 3: Cross multiply
    28,608.09x = 39,477.78 × 15,860.49
  4. Step 4: Simplify right side
    28,608.09x = 626,136,934.91
  5. Step 5: Solve for x
    x = 626,136,934.91/28,608.09
  6. Step 6: Final answer
    x = 21,886.71

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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.