Home / 20,830.10-31,245.14-5,248.94

Finding the Fourth Proportional to 20,830.10, 31,245.14 and 5,248.94

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Solution

The fourth proportional to 20,830.10, 31,245.14 and 5,248.94 is: 7,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.10 : 31,245.14 = 5,248.94 : x
  2. Step 2: Convert to fraction form
    20,830.10/31,245.14 = 5,248.94/x
  3. Step 3: Cross multiply
    20,830.10x = 31,245.14 × 5,248.94
  4. Step 4: Simplify right side
    20,830.10x = 164,003,722.05
  5. Step 5: Solve for x
    x = 164,003,722.05/20,830.10
  6. Step 6: Final answer
    x = 7,873.40

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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.