Home / 21,965.40-30,311.28-12,533.76

Finding the Fourth Proportional to 21,965.40, 30,311.28 and 12,533.76

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Solution

The fourth proportional to 21,965.40, 30,311.28 and 12,533.76 is: 17,296.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.40 : 30,311.28 = 12,533.76 : x
  2. Step 2: Convert to fraction form
    21,965.40/30,311.28 = 12,533.76/x
  3. Step 3: Cross multiply
    21,965.40x = 30,311.28 × 12,533.76
  4. Step 4: Simplify right side
    21,965.40x = 379,914,308.81
  5. Step 5: Solve for x
    x = 379,914,308.81/21,965.40
  6. Step 6: Final answer
    x = 17,296.03

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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.