Home / 14,006.91-19,330.74-7,720.50

Finding the Fourth Proportional to 14,006.91, 19,330.74 and 7,720.50

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Solution

The fourth proportional to 14,006.91, 19,330.74 and 7,720.50 is: 10,654.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.91 : 19,330.74 = 7,720.50 : x
  2. Step 2: Convert to fraction form
    14,006.91/19,330.74 = 7,720.50/x
  3. Step 3: Cross multiply
    14,006.91x = 19,330.74 × 7,720.50
  4. Step 4: Simplify right side
    14,006.91x = 149,242,978.17
  5. Step 5: Solve for x
    x = 149,242,978.17/14,006.91
  6. Step 6: Final answer
    x = 10,654.95

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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.