Home / 28,269.28-42,381.90-12,676

Finding the Fourth Proportional to 28,269.28, 42,381.90 and 12,676

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Solution

The fourth proportional to 28,269.28, 42,381.90 and 12,676 is: 19,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.28 : 42,381.90 = 12,676 : x
  2. Step 2: Convert to fraction form
    28,269.28/42,381.90 = 12,676/x
  3. Step 3: Cross multiply
    28,269.28x = 42,381.90 × 12,676
  4. Step 4: Simplify right side
    28,269.28x = 537,232,964.40
  5. Step 5: Solve for x
    x = 537,232,964.40/28,269.28
  6. Step 6: Final answer
    x = 19,004.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.