Home / 30,977.21-42,749.43-16,830.92

Finding the Fourth Proportional to 30,977.21, 42,749.43 and 16,830.92

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Solution

The fourth proportional to 30,977.21, 42,749.43 and 16,830.92 is: 23,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.21 : 42,749.43 = 16,830.92 : x
  2. Step 2: Convert to fraction form
    30,977.21/42,749.43 = 16,830.92/x
  3. Step 3: Cross multiply
    30,977.21x = 42,749.43 × 16,830.92
  4. Step 4: Simplify right side
    30,977.21x = 719,512,236.38
  5. Step 5: Solve for x
    x = 719,512,236.38/30,977.21
  6. Step 6: Final answer
    x = 23,227.15

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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.