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Finding the Fourth Proportional to 19,188.16, 26,480 and 10,804.80

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Solution

The fourth proportional to 19,188.16, 26,480 and 10,804.80 is: 14,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.16 : 26,480 = 10,804.80 : x
  2. Step 2: Convert to fraction form
    19,188.16/26,480 = 10,804.80/x
  3. Step 3: Cross multiply
    19,188.16x = 26,480 × 10,804.80
  4. Step 4: Simplify right side
    19,188.16x = 286,111,104
  5. Step 5: Solve for x
    x = 286,111,104/19,188.16
  6. Step 6: Final answer
    x = 14,910.82

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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.