Home / 21,977.48-30,329.28-12,415.43

Finding the Fourth Proportional to 21,977.48, 30,329.28 and 12,415.43

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Solution

The fourth proportional to 21,977.48, 30,329.28 and 12,415.43 is: 17,133.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.48 : 30,329.28 = 12,415.43 : x
  2. Step 2: Convert to fraction form
    21,977.48/30,329.28 = 12,415.43/x
  3. Step 3: Cross multiply
    21,977.48x = 30,329.28 × 12,415.43
  4. Step 4: Simplify right side
    21,977.48x = 376,550,901.14
  5. Step 5: Solve for x
    x = 376,550,901.14/21,977.48
  6. Step 6: Final answer
    x = 17,133.49

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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.