Home / 30,808.81-42,517.63-17,379.74

Finding the Fourth Proportional to 30,808.81, 42,517.63 and 17,379.74

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Solution

The fourth proportional to 30,808.81, 42,517.63 and 17,379.74 is: 23,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.81 : 42,517.63 = 17,379.74 : x
  2. Step 2: Convert to fraction form
    30,808.81/42,517.63 = 17,379.74/x
  3. Step 3: Cross multiply
    30,808.81x = 42,517.63 × 17,379.74
  4. Step 4: Simplify right side
    30,808.81x = 738,945,412.13
  5. Step 5: Solve for x
    x = 738,945,412.13/30,808.81
  6. Step 6: Final answer
    x = 23,984.88

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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.