Home / 14,007.88-19,331.28-7,720.66

Finding the Fourth Proportional to 14,007.88, 19,331.28 and 7,720.66

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Solution

The fourth proportional to 14,007.88, 19,331.28 and 7,720.66 is: 10,654.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.88 : 19,331.28 = 7,720.66 : x
  2. Step 2: Convert to fraction form
    14,007.88/19,331.28 = 7,720.66/x
  3. Step 3: Cross multiply
    14,007.88x = 19,331.28 × 7,720.66
  4. Step 4: Simplify right side
    14,007.88x = 149,250,240.24
  5. Step 5: Solve for x
    x = 149,250,240.24/14,007.88
  6. Step 6: Final answer
    x = 10,654.73

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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.