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Finding the Fourth Proportional to 28,042.58, 42,051.56 and 10,500.11

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Solution

The fourth proportional to 28,042.58, 42,051.56 and 10,500.11 is: 15,745.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.58 : 42,051.56 = 10,500.11 : x
  2. Step 2: Convert to fraction form
    28,042.58/42,051.56 = 10,500.11/x
  3. Step 3: Cross multiply
    28,042.58x = 42,051.56 × 10,500.11
  4. Step 4: Simplify right side
    28,042.58x = 441,545,782.34
  5. Step 5: Solve for x
    x = 441,545,782.34/28,042.58
  6. Step 6: Final answer
    x = 15,745.55

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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.