Home / 21,719.80-32,579.70-10,628.20

Finding the Fourth Proportional to 21,719.80, 32,579.70 and 10,628.20

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Solution

The fourth proportional to 21,719.80, 32,579.70 and 10,628.20 is: 15,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.80 : 32,579.70 = 10,628.20 : x
  2. Step 2: Convert to fraction form
    21,719.80/32,579.70 = 10,628.20/x
  3. Step 3: Cross multiply
    21,719.80x = 32,579.70 × 10,628.20
  4. Step 4: Simplify right side
    21,719.80x = 346,263,567.54
  5. Step 5: Solve for x
    x = 346,263,567.54/21,719.80
  6. Step 6: Final answer
    x = 15,942.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.