Home / 20,973.24-28,943.12-11,413.13

Finding the Fourth Proportional to 20,973.24, 28,943.12 and 11,413.13

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Solution

The fourth proportional to 20,973.24, 28,943.12 and 11,413.13 is: 15,750.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.24 : 28,943.12 = 11,413.13 : x
  2. Step 2: Convert to fraction form
    20,973.24/28,943.12 = 11,413.13/x
  3. Step 3: Cross multiply
    20,973.24x = 28,943.12 × 11,413.13
  4. Step 4: Simplify right side
    20,973.24x = 330,331,474.98
  5. Step 5: Solve for x
    x = 330,331,474.98/20,973.24
  6. Step 6: Final answer
    x = 15,750.14

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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.