Home / 15,535.26-21,439.42-8,820.77

Finding the Fourth Proportional to 15,535.26, 21,439.42 and 8,820.77

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Solution

The fourth proportional to 15,535.26, 21,439.42 and 8,820.77 is: 12,173.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.26 : 21,439.42 = 8,820.77 : x
  2. Step 2: Convert to fraction form
    15,535.26/21,439.42 = 8,820.77/x
  3. Step 3: Cross multiply
    15,535.26x = 21,439.42 × 8,820.77
  4. Step 4: Simplify right side
    15,535.26x = 189,112,063.50
  5. Step 5: Solve for x
    x = 189,112,063.50/15,535.26
  6. Step 6: Final answer
    x = 12,173.09

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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.