Home / 21,240.24-29,308.32-12,285.96

Finding the Fourth Proportional to 21,240.24, 29,308.32 and 12,285.96

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Solution

The fourth proportional to 21,240.24, 29,308.32 and 12,285.96 is: 16,952.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.24 : 29,308.32 = 12,285.96 : x
  2. Step 2: Convert to fraction form
    21,240.24/29,308.32 = 12,285.96/x
  3. Step 3: Cross multiply
    21,240.24x = 29,308.32 × 12,285.96
  4. Step 4: Simplify right side
    21,240.24x = 360,080,847.19
  5. Step 5: Solve for x
    x = 360,080,847.19/21,240.24
  6. Step 6: Final answer
    x = 16,952.77

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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.