Home / 11,129.97-15,364.08-10,830.11

Finding the Fourth Proportional to 11,129.97, 15,364.08 and 10,830.11

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Solution

The fourth proportional to 11,129.97, 15,364.08 and 10,830.11 is: 14,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.97 : 15,364.08 = 10,830.11 : x
  2. Step 2: Convert to fraction form
    11,129.97/15,364.08 = 10,830.11/x
  3. Step 3: Cross multiply
    11,129.97x = 15,364.08 × 10,830.11
  4. Step 4: Simplify right side
    11,129.97x = 166,394,599.63
  5. Step 5: Solve for x
    x = 166,394,599.63/11,129.97
  6. Step 6: Final answer
    x = 14,950.14

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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.