Home / 28,419.94-39,219.70-15,673.57

Finding the Fourth Proportional to 28,419.94, 39,219.70 and 15,673.57

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Solution

The fourth proportional to 28,419.94, 39,219.70 and 15,673.57 is: 21,629.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.94 : 39,219.70 = 15,673.57 : x
  2. Step 2: Convert to fraction form
    28,419.94/39,219.70 = 15,673.57/x
  3. Step 3: Cross multiply
    28,419.94x = 39,219.70 × 15,673.57
  4. Step 4: Simplify right side
    28,419.94x = 614,712,713.33
  5. Step 5: Solve for x
    x = 614,712,713.33/28,419.94
  6. Step 6: Final answer
    x = 21,629.63

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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.