Home / 30,934.60-42,689.79-16,787.45

Finding the Fourth Proportional to 30,934.60, 42,689.79 and 16,787.45

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Solution

The fourth proportional to 30,934.60, 42,689.79 and 16,787.45 is: 23,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.60 : 42,689.79 = 16,787.45 : x
  2. Step 2: Convert to fraction form
    30,934.60/42,689.79 = 16,787.45/x
  3. Step 3: Cross multiply
    30,934.60x = 42,689.79 × 16,787.45
  4. Step 4: Simplify right side
    30,934.60x = 716,652,821.86
  5. Step 5: Solve for x
    x = 716,652,821.86/30,934.60
  6. Step 6: Final answer
    x = 23,166.71

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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.