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Finding the Fourth Proportional to 19,307.88, 26,642.97 and 10,809.54

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Solution

The fourth proportional to 19,307.88, 26,642.97 and 10,809.54 is: 14,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,307.88 : 26,642.97 = 10,809.54 : x
  2. Step 2: Convert to fraction form
    19,307.88/26,642.97 = 10,809.54/x
  3. Step 3: Cross multiply
    19,307.88x = 26,642.97 × 10,809.54
  4. Step 4: Simplify right side
    19,307.88x = 287,998,249.93
  5. Step 5: Solve for x
    x = 287,998,249.93/19,307.88
  6. Step 6: Final answer
    x = 14,916.10

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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.