Home / 14,619.90-21,931.23-4,089.92

Finding the Fourth Proportional to 14,619.90, 21,931.23 and 4,089.92

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Solution

The fourth proportional to 14,619.90, 21,931.23 and 4,089.92 is: 6,135.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,619.90 : 21,931.23 = 4,089.92 : x
  2. Step 2: Convert to fraction form
    14,619.90/21,931.23 = 4,089.92/x
  3. Step 3: Cross multiply
    14,619.90x = 21,931.23 × 4,089.92
  4. Step 4: Simplify right side
    14,619.90x = 89,696,964.12
  5. Step 5: Solve for x
    x = 89,696,964.12/14,619.90
  6. Step 6: Final answer
    x = 6,135.27

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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.