Home / 14,747.36-20,351.38-8,779.23

Finding the Fourth Proportional to 14,747.36, 20,351.38 and 8,779.23

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Solution

The fourth proportional to 14,747.36, 20,351.38 and 8,779.23 is: 12,115.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,747.36 : 20,351.38 = 8,779.23 : x
  2. Step 2: Convert to fraction form
    14,747.36/20,351.38 = 8,779.23/x
  3. Step 3: Cross multiply
    14,747.36x = 20,351.38 × 8,779.23
  4. Step 4: Simplify right side
    14,747.36x = 178,669,423.89
  5. Step 5: Solve for x
    x = 178,669,423.89/14,747.36
  6. Step 6: Final answer
    x = 12,115.35

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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.