Home / 28,290.47-39,040.87-15,544.47

Finding the Fourth Proportional to 28,290.47, 39,040.87 and 15,544.47

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Solution

The fourth proportional to 28,290.47, 39,040.87 and 15,544.47 is: 21,451.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.47 : 39,040.87 = 15,544.47 : x
  2. Step 2: Convert to fraction form
    28,290.47/39,040.87 = 15,544.47/x
  3. Step 3: Cross multiply
    28,290.47x = 39,040.87 × 15,544.47
  4. Step 4: Simplify right side
    28,290.47x = 606,869,593.63
  5. Step 5: Solve for x
    x = 606,869,593.63/28,290.47
  6. Step 6: Final answer
    x = 21,451.38

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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.