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Finding the Fourth Proportional to 28,008.75, 42,013.14 and 7,232.25

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Solution

The fourth proportional to 28,008.75, 42,013.14 and 7,232.25 is: 10,848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.75 : 42,013.14 = 7,232.25 : x
  2. Step 2: Convert to fraction form
    28,008.75/42,013.14 = 7,232.25/x
  3. Step 3: Cross multiply
    28,008.75x = 42,013.14 × 7,232.25
  4. Step 4: Simplify right side
    28,008.75x = 303,849,531.77
  5. Step 5: Solve for x
    x = 303,849,531.77/28,008.75
  6. Step 6: Final answer
    x = 10,848.38

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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.