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Finding the Fourth Proportional to 18,745.60, 25,868.14 and 10,788.10

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Solution

The fourth proportional to 18,745.60, 25,868.14 and 10,788.10 is: 14,887.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.60 : 25,868.14 = 10,788.10 : x
  2. Step 2: Convert to fraction form
    18,745.60/25,868.14 = 10,788.10/x
  3. Step 3: Cross multiply
    18,745.60x = 25,868.14 × 10,788.10
  4. Step 4: Simplify right side
    18,745.60x = 279,068,081.13
  5. Step 5: Solve for x
    x = 279,068,081.13/18,745.60
  6. Step 6: Final answer
    x = 14,887.12

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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.