Home / 28,129.80-42,194.70-10,603.56

Finding the Fourth Proportional to 28,129.80, 42,194.70 and 10,603.56

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Solution

The fourth proportional to 28,129.80, 42,194.70 and 10,603.56 is: 15,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.80 : 42,194.70 = 10,603.56 : x
  2. Step 2: Convert to fraction form
    28,129.80/42,194.70 = 10,603.56/x
  3. Step 3: Cross multiply
    28,129.80x = 42,194.70 × 10,603.56
  4. Step 4: Simplify right side
    28,129.80x = 447,414,033.13
  5. Step 5: Solve for x
    x = 447,414,033.13/28,129.80
  6. Step 6: Final answer
    x = 15,905.34

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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.