Home / 20,435.03-30,651.70-7,111.08

Finding the Fourth Proportional to 20,435.03, 30,651.70 and 7,111.08

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Solution

The fourth proportional to 20,435.03, 30,651.70 and 7,111.08 is: 10,666.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.03 : 30,651.70 = 7,111.08 : x
  2. Step 2: Convert to fraction form
    20,435.03/30,651.70 = 7,111.08/x
  3. Step 3: Cross multiply
    20,435.03x = 30,651.70 × 7,111.08
  4. Step 4: Simplify right side
    20,435.03x = 217,966,690.84
  5. Step 5: Solve for x
    x = 217,966,690.84/20,435.03
  6. Step 6: Final answer
    x = 10,666.33

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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.