Home / 15,413.84-21,271.01-8,701.65

Finding the Fourth Proportional to 15,413.84, 21,271.01 and 8,701.65

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Solution

The fourth proportional to 15,413.84, 21,271.01 and 8,701.65 is: 12,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.84 : 21,271.01 = 8,701.65 : x
  2. Step 2: Convert to fraction form
    15,413.84/21,271.01 = 8,701.65/x
  3. Step 3: Cross multiply
    15,413.84x = 21,271.01 × 8,701.65
  4. Step 4: Simplify right side
    15,413.84x = 185,092,884.17
  5. Step 5: Solve for x
    x = 185,092,884.17/15,413.84
  6. Step 6: Final answer
    x = 12,008.23

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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.