Home / 20,548.79-28,358.61-12,047.81

Finding the Fourth Proportional to 20,548.79, 28,358.61 and 12,047.81

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Solution

The fourth proportional to 20,548.79, 28,358.61 and 12,047.81 is: 16,626.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.79 : 28,358.61 = 12,047.81 : x
  2. Step 2: Convert to fraction form
    20,548.79/28,358.61 = 12,047.81/x
  3. Step 3: Cross multiply
    20,548.79x = 28,358.61 × 12,047.81
  4. Step 4: Simplify right side
    20,548.79x = 341,658,958.17
  5. Step 5: Solve for x
    x = 341,658,958.17/20,548.79
  6. Step 6: Final answer
    x = 16,626.72

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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.