Home / 30,998.36-42,776.56-16,851.21

Finding the Fourth Proportional to 30,998.36, 42,776.56 and 16,851.21

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Solution

The fourth proportional to 30,998.36, 42,776.56 and 16,851.21 is: 23,254.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,998.36 : 42,776.56 = 16,851.21 : x
  2. Step 2: Convert to fraction form
    30,998.36/42,776.56 = 16,851.21/x
  3. Step 3: Cross multiply
    30,998.36x = 42,776.56 × 16,851.21
  4. Step 4: Simplify right side
    30,998.36x = 720,836,561.50
  5. Step 5: Solve for x
    x = 720,836,561.50/30,998.36
  6. Step 6: Final answer
    x = 23,254.02

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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.