Home / 14,399.25-19,862.90-8,429.77

Finding the Fourth Proportional to 14,399.25, 19,862.90 and 8,429.77

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Solution

The fourth proportional to 14,399.25, 19,862.90 and 8,429.77 is: 11,628.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,399.25 : 19,862.90 = 8,429.77 : x
  2. Step 2: Convert to fraction form
    14,399.25/19,862.90 = 8,429.77/x
  3. Step 3: Cross multiply
    14,399.25x = 19,862.90 × 8,429.77
  4. Step 4: Simplify right side
    14,399.25x = 167,439,628.88
  5. Step 5: Solve for x
    x = 167,439,628.88/14,399.25
  6. Step 6: Final answer
    x = 11,628.36

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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.