Home / 21,188.42-29,240.58-11,628.74

Finding the Fourth Proportional to 21,188.42, 29,240.58 and 11,628.74

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Solution

The fourth proportional to 21,188.42, 29,240.58 and 11,628.74 is: 16,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.42 : 29,240.58 = 11,628.74 : x
  2. Step 2: Convert to fraction form
    21,188.42/29,240.58 = 11,628.74/x
  3. Step 3: Cross multiply
    21,188.42x = 29,240.58 × 11,628.74
  4. Step 4: Simplify right side
    21,188.42x = 340,031,102.27
  5. Step 5: Solve for x
    x = 340,031,102.27/21,188.42
  6. Step 6: Final answer
    x = 16,047.97

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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.