Home / 20,758.62-31,154.54-10,903.71

Finding the Fourth Proportional to 20,758.62, 31,154.54 and 10,903.71

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Solution

The fourth proportional to 20,758.62, 31,154.54 and 10,903.71 is: 16,364.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.62 : 31,154.54 = 10,903.71 : x
  2. Step 2: Convert to fraction form
    20,758.62/31,154.54 = 10,903.71/x
  3. Step 3: Cross multiply
    20,758.62x = 31,154.54 × 10,903.71
  4. Step 4: Simplify right side
    20,758.62x = 339,700,014.82
  5. Step 5: Solve for x
    x = 339,700,014.82/20,758.62
  6. Step 6: Final answer
    x = 16,364.29

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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.