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Finding the Fourth Proportional to 21,995.16, 33,005.16 and 10,308.48

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Solution

The fourth proportional to 21,995.16, 33,005.16 and 10,308.48 is: 15,468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.16 : 33,005.16 = 10,308.48 : x
  2. Step 2: Convert to fraction form
    21,995.16/33,005.16 = 10,308.48/x
  3. Step 3: Cross multiply
    21,995.16x = 33,005.16 × 10,308.48
  4. Step 4: Simplify right side
    21,995.16x = 340,233,031.76
  5. Step 5: Solve for x
    x = 340,233,031.76/21,995.16
  6. Step 6: Final answer
    x = 15,468.54

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1.5x scale

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.