Home / 12,143.41-16,636.52-11,688.35

Finding the Fourth Proportional to 12,143.41, 16,636.52 and 11,688.35

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Solution

The fourth proportional to 12,143.41, 16,636.52 and 11,688.35 is: 16,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.41 : 16,636.52 = 11,688.35 : x
  2. Step 2: Convert to fraction form
    12,143.41/16,636.52 = 11,688.35/x
  3. Step 3: Cross multiply
    12,143.41x = 16,636.52 × 11,688.35
  4. Step 4: Simplify right side
    12,143.41x = 194,453,539.35
  5. Step 5: Solve for x
    x = 194,453,539.35/12,143.41
  6. Step 6: Final answer
    x = 16,013.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.