Home / 21,198.60-29,236.50-15,905.16

Finding the Fourth Proportional to 21,198.60, 29,236.50 and 15,905.16

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Solution

The fourth proportional to 21,198.60, 29,236.50 and 15,905.16 is: 21,935.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.60 : 29,236.50 = 15,905.16 : x
  2. Step 2: Convert to fraction form
    21,198.60/29,236.50 = 15,905.16/x
  3. Step 3: Cross multiply
    21,198.60x = 29,236.50 × 15,905.16
  4. Step 4: Simplify right side
    21,198.60x = 465,011,210.34
  5. Step 5: Solve for x
    x = 465,011,210.34/21,198.60
  6. Step 6: Final answer
    x = 21,935.94

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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.