Home / 21,966.45-30,314.21-12,535.89

Finding the Fourth Proportional to 21,966.45, 30,314.21 and 12,535.89

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Solution

The fourth proportional to 21,966.45, 30,314.21 and 12,535.89 is: 17,299.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.45 : 30,314.21 = 12,535.89 : x
  2. Step 2: Convert to fraction form
    21,966.45/30,314.21 = 12,535.89/x
  3. Step 3: Cross multiply
    21,966.45x = 30,314.21 × 12,535.89
  4. Step 4: Simplify right side
    21,966.45x = 380,015,602.00
  5. Step 5: Solve for x
    x = 380,015,602.00/21,966.45
  6. Step 6: Final answer
    x = 17,299.82

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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.