Home / 12,720.28-19,051.24-12,001

Finding the Fourth Proportional to 12,720.28, 19,051.24 and 12,001

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Solution

The fourth proportional to 12,720.28, 19,051.24 and 12,001 is: 17,973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.28 : 19,051.24 = 12,001 : x
  2. Step 2: Convert to fraction form
    12,720.28/19,051.24 = 12,001/x
  3. Step 3: Cross multiply
    12,720.28x = 19,051.24 × 12,001
  4. Step 4: Simplify right side
    12,720.28x = 228,633,931.24
  5. Step 5: Solve for x
    x = 228,633,931.24/12,720.28
  6. Step 6: Final answer
    x = 17,973.97

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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.