Home / 18,610.09-25,666.55-12,631.93

Finding the Fourth Proportional to 18,610.09, 25,666.55 and 12,631.93

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Solution

The fourth proportional to 18,610.09, 25,666.55 and 12,631.93 is: 17,421.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.09 : 25,666.55 = 12,631.93 : x
  2. Step 2: Convert to fraction form
    18,610.09/25,666.55 = 12,631.93/x
  3. Step 3: Cross multiply
    18,610.09x = 25,666.55 × 12,631.93
  4. Step 4: Simplify right side
    18,610.09x = 324,217,999.78
  5. Step 5: Solve for x
    x = 324,217,999.78/18,610.09
  6. Step 6: Final answer
    x = 17,421.62

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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.