Home / 28,175.49-42,254.55-9,450.20

Finding the Fourth Proportional to 28,175.49, 42,254.55 and 9,450.20

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Solution

The fourth proportional to 28,175.49, 42,254.55 and 9,450.20 is: 14,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.49 : 42,254.55 = 9,450.20 : x
  2. Step 2: Convert to fraction form
    28,175.49/42,254.55 = 9,450.20/x
  3. Step 3: Cross multiply
    28,175.49x = 42,254.55 × 9,450.20
  4. Step 4: Simplify right side
    28,175.49x = 399,313,737.14
  5. Step 5: Solve for x
    x = 399,313,737.14/28,175.49
  6. Step 6: Final answer
    x = 14,172.38

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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.