Home / 28,128.20-42,202.01-10,603.04

Finding the Fourth Proportional to 28,128.20, 42,202.01 and 10,603.04

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Solution

The fourth proportional to 28,128.20, 42,202.01 and 10,603.04 is: 15,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.20 : 42,202.01 = 10,603.04 : x
  2. Step 2: Convert to fraction form
    28,128.20/42,202.01 = 10,603.04/x
  3. Step 3: Cross multiply
    28,128.20x = 42,202.01 × 10,603.04
  4. Step 4: Simplify right side
    28,128.20x = 447,469,415.61
  5. Step 5: Solve for x
    x = 447,469,415.61/28,128.20
  6. Step 6: Final answer
    x = 15,908.22

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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.