Home / 20,299.34-28,013.10-12,340.10

Finding the Fourth Proportional to 20,299.34, 28,013.10 and 12,340.10

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Solution

The fourth proportional to 20,299.34, 28,013.10 and 12,340.10 is: 17,029.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.34 : 28,013.10 = 12,340.10 : x
  2. Step 2: Convert to fraction form
    20,299.34/28,013.10 = 12,340.10/x
  3. Step 3: Cross multiply
    20,299.34x = 28,013.10 × 12,340.10
  4. Step 4: Simplify right side
    20,299.34x = 345,684,455.31
  5. Step 5: Solve for x
    x = 345,684,455.31/20,299.34
  6. Step 6: Final answer
    x = 17,029.34

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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.