Home / 30,426.90-41,989.02-16,998.21

Finding the Fourth Proportional to 30,426.90, 41,989.02 and 16,998.21

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Solution

The fourth proportional to 30,426.90, 41,989.02 and 16,998.21 is: 23,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,426.90 : 41,989.02 = 16,998.21 : x
  2. Step 2: Convert to fraction form
    30,426.90/41,989.02 = 16,998.21/x
  3. Step 3: Cross multiply
    30,426.90x = 41,989.02 × 16,998.21
  4. Step 4: Simplify right side
    30,426.90x = 713,738,179.65
  5. Step 5: Solve for x
    x = 713,738,179.65/30,426.90
  6. Step 6: Final answer
    x = 23,457.47

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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.