Home / 30,977.84-42,749.06-16,830.56

Finding the Fourth Proportional to 30,977.84, 42,749.06 and 16,830.56

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Solution

The fourth proportional to 30,977.84, 42,749.06 and 16,830.56 is: 23,225.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.84 : 42,749.06 = 16,830.56 : x
  2. Step 2: Convert to fraction form
    30,977.84/42,749.06 = 16,830.56/x
  3. Step 3: Cross multiply
    30,977.84x = 42,749.06 × 16,830.56
  4. Step 4: Simplify right side
    30,977.84x = 719,490,321.38
  5. Step 5: Solve for x
    x = 719,490,321.38/30,977.84
  6. Step 6: Final answer
    x = 23,225.97

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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.