Home / 15,072.03-20,800.67-8,784.81

Finding the Fourth Proportional to 15,072.03, 20,800.67 and 8,784.81

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Solution

The fourth proportional to 15,072.03, 20,800.67 and 8,784.81 is: 12,123.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.03 : 20,800.67 = 8,784.81 : x
  2. Step 2: Convert to fraction form
    15,072.03/20,800.67 = 8,784.81/x
  3. Step 3: Cross multiply
    15,072.03x = 20,800.67 × 8,784.81
  4. Step 4: Simplify right side
    15,072.03x = 182,729,889.90
  5. Step 5: Solve for x
    x = 182,729,889.90/15,072.03
  6. Step 6: Final answer
    x = 12,123.77

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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.