Home / 12,185.28-16,815.60-6,881.13

Finding the Fourth Proportional to 12,185.28, 16,815.60 and 6,881.13

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Solution

The fourth proportional to 12,185.28, 16,815.60 and 6,881.13 is: 9,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.28 : 16,815.60 = 6,881.13 : x
  2. Step 2: Convert to fraction form
    12,185.28/16,815.60 = 6,881.13/x
  3. Step 3: Cross multiply
    12,185.28x = 16,815.60 × 6,881.13
  4. Step 4: Simplify right side
    12,185.28x = 115,710,329.63
  5. Step 5: Solve for x
    x = 115,710,329.63/12,185.28
  6. Step 6: Final answer
    x = 9,495.91

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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.