Home / 20,628.77-30,882.18-15,386.75

Finding the Fourth Proportional to 20,628.77, 30,882.18 and 15,386.75

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Solution

The fourth proportional to 20,628.77, 30,882.18 and 15,386.75 is: 23,034.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.77 : 30,882.18 = 15,386.75 : x
  2. Step 2: Convert to fraction form
    20,628.77/30,882.18 = 15,386.75/x
  3. Step 3: Cross multiply
    20,628.77x = 30,882.18 × 15,386.75
  4. Step 4: Simplify right side
    20,628.77x = 475,176,228.70
  5. Step 5: Solve for x
    x = 475,176,228.70/20,628.77
  6. Step 6: Final answer
    x = 23,034.64

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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.