Home / 15,453.30-21,325.60-8,379.70

Finding the Fourth Proportional to 15,453.30, 21,325.60 and 8,379.70

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Solution

The fourth proportional to 15,453.30, 21,325.60 and 8,379.70 is: 11,564.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.30 : 21,325.60 = 8,379.70 : x
  2. Step 2: Convert to fraction form
    15,453.30/21,325.60 = 8,379.70/x
  3. Step 3: Cross multiply
    15,453.30x = 21,325.60 × 8,379.70
  4. Step 4: Simplify right side
    15,453.30x = 178,702,130.32
  5. Step 5: Solve for x
    x = 178,702,130.32/15,453.30
  6. Step 6: Final answer
    x = 11,564.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.