Home / 30,623.21-42,262.12-17,012.81

Finding the Fourth Proportional to 30,623.21, 42,262.12 and 17,012.81

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Solution

The fourth proportional to 30,623.21, 42,262.12 and 17,012.81 is: 23,478.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,623.21 : 42,262.12 = 17,012.81 : x
  2. Step 2: Convert to fraction form
    30,623.21/42,262.12 = 17,012.81/x
  3. Step 3: Cross multiply
    30,623.21x = 42,262.12 × 17,012.81
  4. Step 4: Simplify right side
    30,623.21x = 718,997,480.88
  5. Step 5: Solve for x
    x = 718,997,480.88/30,623.21
  6. Step 6: Final answer
    x = 23,478.84

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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.