Home / 21,837.36-30,135.56-11,901.36

Finding the Fourth Proportional to 21,837.36, 30,135.56 and 11,901.36

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Solution

The fourth proportional to 21,837.36, 30,135.56 and 11,901.36 is: 16,423.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,837.36 : 30,135.56 = 11,901.36 : x
  2. Step 2: Convert to fraction form
    21,837.36/30,135.56 = 11,901.36/x
  3. Step 3: Cross multiply
    21,837.36x = 30,135.56 × 11,901.36
  4. Step 4: Simplify right side
    21,837.36x = 358,654,148.36
  5. Step 5: Solve for x
    x = 358,654,148.36/21,837.36
  6. Step 6: Final answer
    x = 16,423.88

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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.