Home / 15,310.55-21,128.00-9,352.19

Finding the Fourth Proportional to 15,310.55, 21,128.00 and 9,352.19

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Solution

The fourth proportional to 15,310.55, 21,128.00 and 9,352.19 is: 12,905.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.55 : 21,128.00 = 9,352.19 : x
  2. Step 2: Convert to fraction form
    15,310.55/21,128.00 = 9,352.19/x
  3. Step 3: Cross multiply
    15,310.55x = 21,128.00 × 9,352.19
  4. Step 4: Simplify right side
    15,310.55x = 197,592,917.92
  5. Step 5: Solve for x
    x = 197,592,917.92/15,310.55
  6. Step 6: Final answer
    x = 12,905.68

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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.