Home / 13,699.63-18,888.28-11,179.18

Finding the Fourth Proportional to 13,699.63, 18,888.28 and 11,179.18

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Solution

The fourth proportional to 13,699.63, 18,888.28 and 11,179.18 is: 15,413.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.63 : 18,888.28 = 11,179.18 : x
  2. Step 2: Convert to fraction form
    13,699.63/18,888.28 = 11,179.18/x
  3. Step 3: Cross multiply
    13,699.63x = 18,888.28 × 11,179.18
  4. Step 4: Simplify right side
    13,699.63x = 211,155,454.06
  5. Step 5: Solve for x
    x = 211,155,454.06/13,699.63
  6. Step 6: Final answer
    x = 15,413.22

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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.