Home / 19,380.09-26,747.44-11,830.81

Finding the Fourth Proportional to 19,380.09, 26,747.44 and 11,830.81

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Solution

The fourth proportional to 19,380.09, 26,747.44 and 11,830.81 is: 16,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,380.09 : 26,747.44 = 11,830.81 : x
  2. Step 2: Convert to fraction form
    19,380.09/26,747.44 = 11,830.81/x
  3. Step 3: Cross multiply
    19,380.09x = 26,747.44 × 11,830.81
  4. Step 4: Simplify right side
    19,380.09x = 316,443,880.63
  5. Step 5: Solve for x
    x = 316,443,880.63/19,380.09
  6. Step 6: Final answer
    x = 16,328.30

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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.