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Finding the Fourth Proportional to 18,887.76, 26,064.72 and 10,504.80

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Solution

The fourth proportional to 18,887.76, 26,064.72 and 10,504.80 is: 14,496.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.76 : 26,064.72 = 10,504.80 : x
  2. Step 2: Convert to fraction form
    18,887.76/26,064.72 = 10,504.80/x
  3. Step 3: Cross multiply
    18,887.76x = 26,064.72 × 10,504.80
  4. Step 4: Simplify right side
    18,887.76x = 273,804,670.66
  5. Step 5: Solve for x
    x = 273,804,670.66/18,887.76
  6. Step 6: Final answer
    x = 14,496.41

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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.