Home / 28,103.49-42,127.29-15,629.22

Finding the Fourth Proportional to 28,103.49, 42,127.29 and 15,629.22

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Solution

The fourth proportional to 28,103.49, 42,127.29 and 15,629.22 is: 23,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.49 : 42,127.29 = 15,629.22 : x
  2. Step 2: Convert to fraction form
    28,103.49/42,127.29 = 15,629.22/x
  3. Step 3: Cross multiply
    28,103.49x = 42,127.29 × 15,629.22
  4. Step 4: Simplify right side
    28,103.49x = 658,416,683.41
  5. Step 5: Solve for x
    x = 658,416,683.41/28,103.49
  6. Step 6: Final answer
    x = 23,428.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.