Home / 15,502.33-21,393.10-8,428.75

Finding the Fourth Proportional to 15,502.33, 21,393.10 and 8,428.75

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Solution

The fourth proportional to 15,502.33, 21,393.10 and 8,428.75 is: 11,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.33 : 21,393.10 = 8,428.75 : x
  2. Step 2: Convert to fraction form
    15,502.33/21,393.10 = 8,428.75/x
  3. Step 3: Cross multiply
    15,502.33x = 21,393.10 × 8,428.75
  4. Step 4: Simplify right side
    15,502.33x = 180,317,048.68
  5. Step 5: Solve for x
    x = 180,317,048.68/15,502.33
  6. Step 6: Final answer
    x = 11,631.61

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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.