Home / 28,103.80-42,155.70-10,577.56

Finding the Fourth Proportional to 28,103.80, 42,155.70 and 10,577.56

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Solution

The fourth proportional to 28,103.80, 42,155.70 and 10,577.56 is: 15,866.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.80 : 42,155.70 = 10,577.56 : x
  2. Step 2: Convert to fraction form
    28,103.80/42,155.70 = 10,577.56/x
  3. Step 3: Cross multiply
    28,103.80x = 42,155.70 × 10,577.56
  4. Step 4: Simplify right side
    28,103.80x = 445,904,446.09
  5. Step 5: Solve for x
    x = 445,904,446.09/28,103.80
  6. Step 6: Final answer
    x = 15,866.34

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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.