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Finding the Fourth Proportional to 28,042.11, 42,063.08 and 9,323.60

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Solution

The fourth proportional to 28,042.11, 42,063.08 and 9,323.60 is: 13,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.11 : 42,063.08 = 9,323.60 : x
  2. Step 2: Convert to fraction form
    28,042.11/42,063.08 = 9,323.60/x
  3. Step 3: Cross multiply
    28,042.11x = 42,063.08 × 9,323.60
  4. Step 4: Simplify right side
    28,042.11x = 392,179,075.75
  5. Step 5: Solve for x
    x = 392,179,075.75/28,042.11
  6. Step 6: Final answer
    x = 13,985.36

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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.