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Finding the Fourth Proportional to 14,068.92, 19,413.90 and 7,779.72

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Solution

The fourth proportional to 14,068.92, 19,413.90 and 7,779.72 is: 10,735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,068.92 : 19,413.90 = 7,779.72 : x
  2. Step 2: Convert to fraction form
    14,068.92/19,413.90 = 7,779.72/x
  3. Step 3: Cross multiply
    14,068.92x = 19,413.90 × 7,779.72
  4. Step 4: Simplify right side
    14,068.92x = 151,034,706.11
  5. Step 5: Solve for x
    x = 151,034,706.11/14,068.92
  6. Step 6: Final answer
    x = 10,735.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.