Home / 13,631.84-18,821.27-10,439.51

Finding the Fourth Proportional to 13,631.84, 18,821.27 and 10,439.51

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Solution

The fourth proportional to 13,631.84, 18,821.27 and 10,439.51 is: 14,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.84 : 18,821.27 = 10,439.51 : x
  2. Step 2: Convert to fraction form
    13,631.84/18,821.27 = 10,439.51/x
  3. Step 3: Cross multiply
    13,631.84x = 18,821.27 × 10,439.51
  4. Step 4: Simplify right side
    13,631.84x = 196,484,802.95
  5. Step 5: Solve for x
    x = 196,484,802.95/13,631.84
  6. Step 6: Final answer
    x = 14,413.66

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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.