Home / 21,342.72-29,455.74-11,913.24

Finding the Fourth Proportional to 21,342.72, 29,455.74 and 11,913.24

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Solution

The fourth proportional to 21,342.72, 29,455.74 and 11,913.24 is: 16,441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.72 : 29,455.74 = 11,913.24 : x
  2. Step 2: Convert to fraction form
    21,342.72/29,455.74 = 11,913.24/x
  3. Step 3: Cross multiply
    21,342.72x = 29,455.74 × 11,913.24
  4. Step 4: Simplify right side
    21,342.72x = 350,913,300.00
  5. Step 5: Solve for x
    x = 350,913,300.00/21,342.72
  6. Step 6: Final answer
    x = 16,441.83

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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.