Home / 28,629.80-39,505.36-15,882.84

Finding the Fourth Proportional to 28,629.80, 39,505.36 and 15,882.84

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Solution

The fourth proportional to 28,629.80, 39,505.36 and 15,882.84 is: 21,916.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.80 : 39,505.36 = 15,882.84 : x
  2. Step 2: Convert to fraction form
    28,629.80/39,505.36 = 15,882.84/x
  3. Step 3: Cross multiply
    28,629.80x = 39,505.36 × 15,882.84
  4. Step 4: Simplify right side
    28,629.80x = 627,457,312.02
  5. Step 5: Solve for x
    x = 627,457,312.02/28,629.80
  6. Step 6: Final answer
    x = 21,916.23

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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.