Home / 31,066.90-42,872.32-16,919.75

Finding the Fourth Proportional to 31,066.90, 42,872.32 and 16,919.75

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Solution

The fourth proportional to 31,066.90, 42,872.32 and 16,919.75 is: 23,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,066.90 : 42,872.32 = 16,919.75 : x
  2. Step 2: Convert to fraction form
    31,066.90/42,872.32 = 16,919.75/x
  3. Step 3: Cross multiply
    31,066.90x = 42,872.32 × 16,919.75
  4. Step 4: Simplify right side
    31,066.90x = 725,388,823.49
  5. Step 5: Solve for x
    x = 725,388,823.49/31,066.90
  6. Step 6: Final answer
    x = 23,349.25

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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.