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Finding the Fourth Proportional to 28,071.92, 42,072.62 and 14,035.86

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Solution

The fourth proportional to 28,071.92, 42,072.62 and 14,035.86 is: 21,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.92 : 42,072.62 = 14,035.86 : x
  2. Step 2: Convert to fraction form
    28,071.92/42,072.62 = 14,035.86/x
  3. Step 3: Cross multiply
    28,071.92x = 42,072.62 × 14,035.86
  4. Step 4: Simplify right side
    28,071.92x = 590,525,404.15
  5. Step 5: Solve for x
    x = 590,525,404.15/28,071.92
  6. Step 6: Final answer
    x = 21,036.16

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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.