Home / 20,299.50-28,013.09-11,347.92

Finding the Fourth Proportional to 20,299.50, 28,013.09 and 11,347.92

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Solution

The fourth proportional to 20,299.50, 28,013.09 and 11,347.92 is: 15,660.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.50 : 28,013.09 = 11,347.92 : x
  2. Step 2: Convert to fraction form
    20,299.50/28,013.09 = 11,347.92/x
  3. Step 3: Cross multiply
    20,299.50x = 28,013.09 × 11,347.92
  4. Step 4: Simplify right side
    20,299.50x = 317,890,247.53
  5. Step 5: Solve for x
    x = 317,890,247.53/20,299.50
  6. Step 6: Final answer
    x = 15,660.00

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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.