Home / 15,515.10-21,411.06-8,441.52

Finding the Fourth Proportional to 15,515.10, 21,411.06 and 8,441.52

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Solution

The fourth proportional to 15,515.10, 21,411.06 and 8,441.52 is: 11,649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.10 : 21,411.06 = 8,441.52 : x
  2. Step 2: Convert to fraction form
    15,515.10/21,411.06 = 8,441.52/x
  3. Step 3: Cross multiply
    15,515.10x = 21,411.06 × 8,441.52
  4. Step 4: Simplify right side
    15,515.10x = 180,741,891.21
  5. Step 5: Solve for x
    x = 180,741,891.21/15,515.10
  6. Step 6: Final answer
    x = 11,649.42

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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.