Home / 12,779.69-17,634.59-7,113.55

Finding the Fourth Proportional to 12,779.69, 17,634.59 and 7,113.55

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Solution

The fourth proportional to 12,779.69, 17,634.59 and 7,113.55 is: 9,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.69 : 17,634.59 = 7,113.55 : x
  2. Step 2: Convert to fraction form
    12,779.69/17,634.59 = 7,113.55/x
  3. Step 3: Cross multiply
    12,779.69x = 17,634.59 × 7,113.55
  4. Step 4: Simplify right side
    12,779.69x = 125,444,413.95
  5. Step 5: Solve for x
    x = 125,444,413.95/12,779.69
  6. Step 6: Final answer
    x = 9,815.92

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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.