Home / 19,771.84-27,276.90-12,964

Finding the Fourth Proportional to 19,771.84, 27,276.90 and 12,964

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Solution

The fourth proportional to 19,771.84, 27,276.90 and 12,964 is: 17,884.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,771.84 : 27,276.90 = 12,964 : x
  2. Step 2: Convert to fraction form
    19,771.84/27,276.90 = 12,964/x
  3. Step 3: Cross multiply
    19,771.84x = 27,276.90 × 12,964
  4. Step 4: Simplify right side
    19,771.84x = 353,617,731.60
  5. Step 5: Solve for x
    x = 353,617,731.60/19,771.84
  6. Step 6: Final answer
    x = 17,884.92

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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.