Home / 30,980.31-42,753.09-16,833.16

Finding the Fourth Proportional to 30,980.31, 42,753.09 and 16,833.16

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Solution

The fourth proportional to 30,980.31, 42,753.09 and 16,833.16 is: 23,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,980.31 : 42,753.09 = 16,833.16 : x
  2. Step 2: Convert to fraction form
    30,980.31/42,753.09 = 16,833.16/x
  3. Step 3: Cross multiply
    30,980.31x = 42,753.09 × 16,833.16
  4. Step 4: Simplify right side
    30,980.31x = 719,669,463.26
  5. Step 5: Solve for x
    x = 719,669,463.26/30,980.31
  6. Step 6: Final answer
    x = 23,229.90

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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.