Home / 20,430.08-30,784.10-16,813.44

Finding the Fourth Proportional to 20,430.08, 30,784.10 and 16,813.44

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Solution

The fourth proportional to 20,430.08, 30,784.10 and 16,813.44 is: 25,334.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.08 : 30,784.10 = 16,813.44 : x
  2. Step 2: Convert to fraction form
    20,430.08/30,784.10 = 16,813.44/x
  3. Step 3: Cross multiply
    20,430.08x = 30,784.10 × 16,813.44
  4. Step 4: Simplify right side
    20,430.08x = 517,586,618.30
  5. Step 5: Solve for x
    x = 517,586,618.30/20,430.08
  6. Step 6: Final answer
    x = 25,334.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.