Home / 30,989.21-42,765.44-16,842.06

Finding the Fourth Proportional to 30,989.21, 42,765.44 and 16,842.06

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Solution

The fourth proportional to 30,989.21, 42,765.44 and 16,842.06 is: 23,242.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.21 : 42,765.44 = 16,842.06 : x
  2. Step 2: Convert to fraction form
    30,989.21/42,765.44 = 16,842.06/x
  3. Step 3: Cross multiply
    30,989.21x = 42,765.44 × 16,842.06
  4. Step 4: Simplify right side
    30,989.21x = 720,258,106.41
  5. Step 5: Solve for x
    x = 720,258,106.41/30,989.21
  6. Step 6: Final answer
    x = 23,242.22

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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.