Home / 20,328.24-30,491.98-8,488.38

Finding the Fourth Proportional to 20,328.24, 30,491.98 and 8,488.38

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Solution

The fourth proportional to 20,328.24, 30,491.98 and 8,488.38 is: 12,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.24 : 30,491.98 = 8,488.38 : x
  2. Step 2: Convert to fraction form
    20,328.24/30,491.98 = 8,488.38/x
  3. Step 3: Cross multiply
    20,328.24x = 30,491.98 × 8,488.38
  4. Step 4: Simplify right side
    20,328.24x = 258,827,318.29
  5. Step 5: Solve for x
    x = 258,827,318.29/20,328.24
  6. Step 6: Final answer
    x = 12,732.40

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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.