Home / 18,945.18-26,145.09-10,561.50

Finding the Fourth Proportional to 18,945.18, 26,145.09 and 10,561.50

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Solution

The fourth proportional to 18,945.18, 26,145.09 and 10,561.50 is: 14,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.18 : 26,145.09 = 10,561.50 : x
  2. Step 2: Convert to fraction form
    18,945.18/26,145.09 = 10,561.50/x
  3. Step 3: Cross multiply
    18,945.18x = 26,145.09 × 10,561.50
  4. Step 4: Simplify right side
    18,945.18x = 276,131,368.04
  5. Step 5: Solve for x
    x = 276,131,368.04/18,945.18
  6. Step 6: Final answer
    x = 14,575.28

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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.