Home / 20,491.68-30,758.58-10,628.31

Finding the Fourth Proportional to 20,491.68, 30,758.58 and 10,628.31

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Solution

The fourth proportional to 20,491.68, 30,758.58 and 10,628.31 is: 15,953.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.68 : 30,758.58 = 10,628.31 : x
  2. Step 2: Convert to fraction form
    20,491.68/30,758.58 = 10,628.31/x
  3. Step 3: Cross multiply
    20,491.68x = 30,758.58 × 10,628.31
  4. Step 4: Simplify right side
    20,491.68x = 326,911,723.40
  5. Step 5: Solve for x
    x = 326,911,723.40/20,491.68
  6. Step 6: Final answer
    x = 15,953.39

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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.