Home / 21,243.91-29,316.65-11,814.30

Finding the Fourth Proportional to 21,243.91, 29,316.65 and 11,814.30

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Solution

The fourth proportional to 21,243.91, 29,316.65 and 11,814.30 is: 16,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.91 : 29,316.65 = 11,814.30 : x
  2. Step 2: Convert to fraction form
    21,243.91/29,316.65 = 11,814.30/x
  3. Step 3: Cross multiply
    21,243.91x = 29,316.65 × 11,814.30
  4. Step 4: Simplify right side
    21,243.91x = 346,355,698.10
  5. Step 5: Solve for x
    x = 346,355,698.10/21,243.91
  6. Step 6: Final answer
    x = 16,303.76

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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.