Home / 21,966.40-30,314.52-12,408.36

Finding the Fourth Proportional to 21,966.40, 30,314.52 and 12,408.36

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Solution

The fourth proportional to 21,966.40, 30,314.52 and 12,408.36 is: 17,124.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.40 : 30,314.52 = 12,408.36 : x
  2. Step 2: Convert to fraction form
    21,966.40/30,314.52 = 12,408.36/x
  3. Step 3: Cross multiply
    21,966.40x = 30,314.52 × 12,408.36
  4. Step 4: Simplify right side
    21,966.40x = 376,153,477.39
  5. Step 5: Solve for x
    x = 376,153,477.39/21,966.40
  6. Step 6: Final answer
    x = 17,124.04

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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.