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Finding the Fourth Proportional to 18,677.50, 25,775.50 and 10,294.54

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Solution

The fourth proportional to 18,677.50, 25,775.50 and 10,294.54 is: 14,206.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.50 : 25,775.50 = 10,294.54 : x
  2. Step 2: Convert to fraction form
    18,677.50/25,775.50 = 10,294.54/x
  3. Step 3: Cross multiply
    18,677.50x = 25,775.50 × 10,294.54
  4. Step 4: Simplify right side
    18,677.50x = 265,346,915.77
  5. Step 5: Solve for x
    x = 265,346,915.77/18,677.50
  6. Step 6: Final answer
    x = 14,206.77

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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.