Home / 15,384.80-21,225.84-9,413.12

Finding the Fourth Proportional to 15,384.80, 21,225.84 and 9,413.12

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Solution

The fourth proportional to 15,384.80, 21,225.84 and 9,413.12 is: 12,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.80 : 21,225.84 = 9,413.12 : x
  2. Step 2: Convert to fraction form
    15,384.80/21,225.84 = 9,413.12/x
  3. Step 3: Cross multiply
    15,384.80x = 21,225.84 × 9,413.12
  4. Step 4: Simplify right side
    15,384.80x = 199,801,379.02
  5. Step 5: Solve for x
    x = 199,801,379.02/15,384.80
  6. Step 6: Final answer
    x = 12,986.93

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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.