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Finding the Fourth Proportional to 18,878.48, 26,059.56 and 12,588.56

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Solution

The fourth proportional to 18,878.48, 26,059.56 and 12,588.56 is: 17,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.48 : 26,059.56 = 12,588.56 : x
  2. Step 2: Convert to fraction form
    18,878.48/26,059.56 = 12,588.56/x
  3. Step 3: Cross multiply
    18,878.48x = 26,059.56 × 12,588.56
  4. Step 4: Simplify right side
    18,878.48x = 328,052,334.63
  5. Step 5: Solve for x
    x = 328,052,334.63/18,878.48
  6. Step 6: Final answer
    x = 17,377.05

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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.