Home / 15,413.96-21,271.14-8,340.24

Finding the Fourth Proportional to 15,413.96, 21,271.14 and 8,340.24

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Solution

The fourth proportional to 15,413.96, 21,271.14 and 8,340.24 is: 11,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.96 : 21,271.14 = 8,340.24 : x
  2. Step 2: Convert to fraction form
    15,413.96/21,271.14 = 8,340.24/x
  3. Step 3: Cross multiply
    15,413.96x = 21,271.14 × 8,340.24
  4. Step 4: Simplify right side
    15,413.96x = 177,406,412.67
  5. Step 5: Solve for x
    x = 177,406,412.67/15,413.96
  6. Step 6: Final answer
    x = 11,509.46

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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.