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Finding the Fourth Proportional to 28,070, 42,090.88 and 9,343.44

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Solution

The fourth proportional to 28,070, 42,090.88 and 9,343.44 is: 14,010.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070 : 42,090.88 = 9,343.44 : x
  2. Step 2: Convert to fraction form
    28,070/42,090.88 = 9,343.44/x
  3. Step 3: Cross multiply
    28,070x = 42,090.88 × 9,343.44
  4. Step 4: Simplify right side
    28,070x = 393,273,611.83
  5. Step 5: Solve for x
    x = 393,273,611.83/28,070
  6. Step 6: Final answer
    x = 14,010.46

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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.