Home / 28,133.30-42,200.40-7,356.80

Finding the Fourth Proportional to 28,133.30, 42,200.40 and 7,356.80

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Solution

The fourth proportional to 28,133.30, 42,200.40 and 7,356.80 is: 11,035.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.30 : 42,200.40 = 7,356.80 : x
  2. Step 2: Convert to fraction form
    28,133.30/42,200.40 = 7,356.80/x
  3. Step 3: Cross multiply
    28,133.30x = 42,200.40 × 7,356.80
  4. Step 4: Simplify right side
    28,133.30x = 310,459,902.72
  5. Step 5: Solve for x
    x = 310,459,902.72/28,133.30
  6. Step 6: Final answer
    x = 11,035.32

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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.