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Finding the Fourth Proportional to 12,354.53, 18,510.24 and 10,287.83

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Solution

The fourth proportional to 12,354.53, 18,510.24 and 10,287.83 is: 15,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.53 : 18,510.24 = 10,287.83 : x
  2. Step 2: Convert to fraction form
    12,354.53/18,510.24 = 10,287.83/x
  3. Step 3: Cross multiply
    12,354.53x = 18,510.24 × 10,287.83
  4. Step 4: Simplify right side
    12,354.53x = 190,430,202.38
  5. Step 5: Solve for x
    x = 190,430,202.38/12,354.53
  6. Step 6: Final answer
    x = 15,413.80

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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.