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Finding the Fourth Proportional to 18,887.79, 26,064.12 and 10,503.75

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Solution

The fourth proportional to 18,887.79, 26,064.12 and 10,503.75 is: 14,494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.79 : 26,064.12 = 10,503.75 : x
  2. Step 2: Convert to fraction form
    18,887.79/26,064.12 = 10,503.75/x
  3. Step 3: Cross multiply
    18,887.79x = 26,064.12 × 10,503.75
  4. Step 4: Simplify right side
    18,887.79x = 273,771,000.45
  5. Step 5: Solve for x
    x = 273,771,000.45/18,887.79
  6. Step 6: Final answer
    x = 14,494.60

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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.