Home / 30,557.80-45,815.10-11,830.60

Finding the Fourth Proportional to 30,557.80, 45,815.10 and 11,830.60

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Solution

The fourth proportional to 30,557.80, 45,815.10 and 11,830.60 is: 17,737.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.80 : 45,815.10 = 11,830.60 : x
  2. Step 2: Convert to fraction form
    30,557.80/45,815.10 = 11,830.60/x
  3. Step 3: Cross multiply
    30,557.80x = 45,815.10 × 11,830.60
  4. Step 4: Simplify right side
    30,557.80x = 542,020,122.06
  5. Step 5: Solve for x
    x = 542,020,122.06/30,557.80
  6. Step 6: Final answer
    x = 17,737.54

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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.