Home / 14,289.60-21,431.04-3,898.88

Finding the Fourth Proportional to 14,289.60, 21,431.04 and 3,898.88

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Solution

The fourth proportional to 14,289.60, 21,431.04 and 3,898.88 is: 5,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.60 : 21,431.04 = 3,898.88 : x
  2. Step 2: Convert to fraction form
    14,289.60/21,431.04 = 3,898.88/x
  3. Step 3: Cross multiply
    14,289.60x = 21,431.04 × 3,898.88
  4. Step 4: Simplify right side
    14,289.60x = 83,557,053.24
  5. Step 5: Solve for x
    x = 83,557,053.24/14,289.60
  6. Step 6: Final answer
    x = 5,847.40

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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.