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Finding the Fourth Proportional to 19,311, 26,646.18 and 10,810.86

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Solution

The fourth proportional to 19,311, 26,646.18 and 10,810.86 is: 14,917.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311 : 26,646.18 = 10,810.86 : x
  2. Step 2: Convert to fraction form
    19,311/26,646.18 = 10,810.86/x
  3. Step 3: Cross multiply
    19,311x = 26,646.18 × 10,810.86
  4. Step 4: Simplify right side
    19,311x = 288,068,121.51
  5. Step 5: Solve for x
    x = 288,068,121.51/19,311
  6. Step 6: Final answer
    x = 14,917.31

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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.