Home / 20,306.70-30,443.85-8,610.30

Finding the Fourth Proportional to 20,306.70, 30,443.85 and 8,610.30

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Solution

The fourth proportional to 20,306.70, 30,443.85 and 8,610.30 is: 12,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.70 : 30,443.85 = 8,610.30 : x
  2. Step 2: Convert to fraction form
    20,306.70/30,443.85 = 8,610.30/x
  3. Step 3: Cross multiply
    20,306.70x = 30,443.85 × 8,610.30
  4. Step 4: Simplify right side
    20,306.70x = 262,130,681.66
  5. Step 5: Solve for x
    x = 262,130,681.66/20,306.70
  6. Step 6: Final answer
    x = 12,908.58

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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.