Home / 15,513.26-21,410.48-8,800.54

Finding the Fourth Proportional to 15,513.26, 21,410.48 and 8,800.54

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Solution

The fourth proportional to 15,513.26, 21,410.48 and 8,800.54 is: 12,145.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.26 : 21,410.48 = 8,800.54 : x
  2. Step 2: Convert to fraction form
    15,513.26/21,410.48 = 8,800.54/x
  3. Step 3: Cross multiply
    15,513.26x = 21,410.48 × 8,800.54
  4. Step 4: Simplify right side
    15,513.26x = 188,423,754.13
  5. Step 5: Solve for x
    x = 188,423,754.13/15,513.26
  6. Step 6: Final answer
    x = 12,145.98

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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.