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Finding the Fourth Proportional to 19,369.50, 26,726.55 and 11,411.10

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Solution

The fourth proportional to 19,369.50, 26,726.55 and 11,411.10 is: 15,745.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.50 : 26,726.55 = 11,411.10 : x
  2. Step 2: Convert to fraction form
    19,369.50/26,726.55 = 11,411.10/x
  3. Step 3: Cross multiply
    19,369.50x = 26,726.55 × 11,411.10
  4. Step 4: Simplify right side
    19,369.50x = 304,979,334.71
  5. Step 5: Solve for x
    x = 304,979,334.71/19,369.50
  6. Step 6: Final answer
    x = 15,745.34

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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.