Home / 15,709.07-21,678.96-8,995.38

Finding the Fourth Proportional to 15,709.07, 21,678.96 and 8,995.38

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Solution

The fourth proportional to 15,709.07, 21,678.96 and 8,995.38 is: 12,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.07 : 21,678.96 = 8,995.38 : x
  2. Step 2: Convert to fraction form
    15,709.07/21,678.96 = 8,995.38/x
  3. Step 3: Cross multiply
    15,709.07x = 21,678.96 × 8,995.38
  4. Step 4: Simplify right side
    15,709.07x = 195,010,483.20
  5. Step 5: Solve for x
    x = 195,010,483.20/15,709.07
  6. Step 6: Final answer
    x = 12,413.88

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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.