Home / 15,629.84-21,546.68-11,145.76

Finding the Fourth Proportional to 15,629.84, 21,546.68 and 11,145.76

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Solution

The fourth proportional to 15,629.84, 21,546.68 and 11,145.76 is: 15,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.84 : 21,546.68 = 11,145.76 : x
  2. Step 2: Convert to fraction form
    15,629.84/21,546.68 = 11,145.76/x
  3. Step 3: Cross multiply
    15,629.84x = 21,546.68 × 11,145.76
  4. Step 4: Simplify right side
    15,629.84x = 240,154,124.08
  5. Step 5: Solve for x
    x = 240,154,124.08/15,629.84
  6. Step 6: Final answer
    x = 15,365.10

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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.