Home / 19,153.10-28,664.85-16,820.30

Finding the Fourth Proportional to 19,153.10, 28,664.85 and 16,820.30

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Solution

The fourth proportional to 19,153.10, 28,664.85 and 16,820.30 is: 25,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,153.10 : 28,664.85 = 16,820.30 : x
  2. Step 2: Convert to fraction form
    19,153.10/28,664.85 = 16,820.30/x
  3. Step 3: Cross multiply
    19,153.10x = 28,664.85 × 16,820.30
  4. Step 4: Simplify right side
    19,153.10x = 482,151,376.46
  5. Step 5: Solve for x
    x = 482,151,376.46/19,153.10
  6. Step 6: Final answer
    x = 25,173.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.