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Finding the Fourth Proportional to 25,999.50, 39,007.07 and 10,998.89

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Solution

The fourth proportional to 25,999.50, 39,007.07 and 10,998.89 is: 16,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,999.50 : 39,007.07 = 10,998.89 : x
  2. Step 2: Convert to fraction form
    25,999.50/39,007.07 = 10,998.89/x
  3. Step 3: Cross multiply
    25,999.50x = 39,007.07 × 10,998.89
  4. Step 4: Simplify right side
    25,999.50x = 429,034,409.64
  5. Step 5: Solve for x
    x = 429,034,409.64/25,999.50
  6. Step 6: Final answer
    x = 16,501.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.