Home / 30,977.76-42,749.22-16,830.48

Finding the Fourth Proportional to 30,977.76, 42,749.22 and 16,830.48

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Solution

The fourth proportional to 30,977.76, 42,749.22 and 16,830.48 is: 23,226.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.76 : 42,749.22 = 16,830.48 : x
  2. Step 2: Convert to fraction form
    30,977.76/42,749.22 = 16,830.48/x
  3. Step 3: Cross multiply
    30,977.76x = 42,749.22 × 16,830.48
  4. Step 4: Simplify right side
    30,977.76x = 719,489,892.23
  5. Step 5: Solve for x
    x = 719,489,892.23/30,977.76
  6. Step 6: Final answer
    x = 23,226.01

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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.