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Finding the Fourth Proportional to 28,039, 42,066.04 and 9,322.06

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Solution

The fourth proportional to 28,039, 42,066.04 and 9,322.06 is: 13,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039 : 42,066.04 = 9,322.06 : x
  2. Step 2: Convert to fraction form
    28,039/42,066.04 = 9,322.06/x
  3. Step 3: Cross multiply
    28,039x = 42,066.04 × 9,322.06
  4. Step 4: Simplify right side
    28,039x = 392,142,148.84
  5. Step 5: Solve for x
    x = 392,142,148.84/28,039
  6. Step 6: Final answer
    x = 13,985.60

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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.