Home / 19,814.10-29,721.60-7,969.08

Finding the Fourth Proportional to 19,814.10, 29,721.60 and 7,969.08

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Solution

The fourth proportional to 19,814.10, 29,721.60 and 7,969.08 is: 11,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,814.10 : 29,721.60 = 7,969.08 : x
  2. Step 2: Convert to fraction form
    19,814.10/29,721.60 = 7,969.08/x
  3. Step 3: Cross multiply
    19,814.10x = 29,721.60 × 7,969.08
  4. Step 4: Simplify right side
    19,814.10x = 236,853,808.13
  5. Step 5: Solve for x
    x = 236,853,808.13/19,814.10
  6. Step 6: Final answer
    x = 11,953.80

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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.