Home / 13,205.43-19,779.08-12,477.56

Finding the Fourth Proportional to 13,205.43, 19,779.08 and 12,477.56

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Solution

The fourth proportional to 13,205.43, 19,779.08 and 12,477.56 is: 18,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.43 : 19,779.08 = 12,477.56 : x
  2. Step 2: Convert to fraction form
    13,205.43/19,779.08 = 12,477.56/x
  3. Step 3: Cross multiply
    13,205.43x = 19,779.08 × 12,477.56
  4. Step 4: Simplify right side
    13,205.43x = 246,794,496.16
  5. Step 5: Solve for x
    x = 246,794,496.16/13,205.43
  6. Step 6: Final answer
    x = 18,688.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.