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Finding the Fourth Proportional to 19,560, 26,992.84 and 11,176.48

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Solution

The fourth proportional to 19,560, 26,992.84 and 11,176.48 is: 15,423.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,560 : 26,992.84 = 11,176.48 : x
  2. Step 2: Convert to fraction form
    19,560/26,992.84 = 11,176.48/x
  3. Step 3: Cross multiply
    19,560x = 26,992.84 × 11,176.48
  4. Step 4: Simplify right side
    19,560x = 301,684,936.40
  5. Step 5: Solve for x
    x = 301,684,936.40/19,560
  6. Step 6: Final answer
    x = 15,423.57

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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.