Home / 21,996.52-30,347.64-12,435.28

Finding the Fourth Proportional to 21,996.52, 30,347.64 and 12,435.28

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Solution

The fourth proportional to 21,996.52, 30,347.64 and 12,435.28 is: 17,156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.52 : 30,347.64 = 12,435.28 : x
  2. Step 2: Convert to fraction form
    21,996.52/30,347.64 = 12,435.28/x
  3. Step 3: Cross multiply
    21,996.52x = 30,347.64 × 12,435.28
  4. Step 4: Simplify right side
    21,996.52x = 377,381,400.74
  5. Step 5: Solve for x
    x = 377,381,400.74/21,996.52
  6. Step 6: Final answer
    x = 17,156.41

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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.