Home / 15,515.42-21,411.76-8,801.32

Finding the Fourth Proportional to 15,515.42, 21,411.76 and 8,801.32

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Solution

The fourth proportional to 15,515.42, 21,411.76 and 8,801.32 is: 12,146.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.42 : 21,411.76 = 8,801.32 : x
  2. Step 2: Convert to fraction form
    15,515.42/21,411.76 = 8,801.32/x
  3. Step 3: Cross multiply
    15,515.42x = 21,411.76 × 8,801.32
  4. Step 4: Simplify right side
    15,515.42x = 188,451,751.52
  5. Step 5: Solve for x
    x = 188,451,751.52/15,515.42
  6. Step 6: Final answer
    x = 12,146.09

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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.