Home / 20,853.10-31,279.55-7,002.10

Finding the Fourth Proportional to 20,853.10, 31,279.55 and 7,002.10

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Solution

The fourth proportional to 20,853.10, 31,279.55 and 7,002.10 is: 10,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.10 : 31,279.55 = 7,002.10 : x
  2. Step 2: Convert to fraction form
    20,853.10/31,279.55 = 7,002.10/x
  3. Step 3: Cross multiply
    20,853.10x = 31,279.55 × 7,002.10
  4. Step 4: Simplify right side
    20,853.10x = 219,022,537.06
  5. Step 5: Solve for x
    x = 219,022,537.06/20,853.10
  6. Step 6: Final answer
    x = 10,503.12

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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.