Home / 30,808.32-42,515.64-17,379.12

Finding the Fourth Proportional to 30,808.32, 42,515.64 and 17,379.12

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Solution

The fourth proportional to 30,808.32, 42,515.64 and 17,379.12 is: 23,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.32 : 42,515.64 = 17,379.12 : x
  2. Step 2: Convert to fraction form
    30,808.32/42,515.64 = 17,379.12/x
  3. Step 3: Cross multiply
    30,808.32x = 42,515.64 × 17,379.12
  4. Step 4: Simplify right side
    30,808.32x = 738,884,409.44
  5. Step 5: Solve for x
    x = 738,884,409.44/30,808.32
  6. Step 6: Final answer
    x = 23,983.27

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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.