Home / 12,915.21-19,373.04-3,555.18

Finding the Fourth Proportional to 12,915.21, 19,373.04 and 3,555.18

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Solution

The fourth proportional to 12,915.21, 19,373.04 and 3,555.18 is: 5,332.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.21 : 19,373.04 = 3,555.18 : x
  2. Step 2: Convert to fraction form
    12,915.21/19,373.04 = 3,555.18/x
  3. Step 3: Cross multiply
    12,915.21x = 19,373.04 × 3,555.18
  4. Step 4: Simplify right side
    12,915.21x = 68,874,644.35
  5. Step 5: Solve for x
    x = 68,874,644.35/12,915.21
  6. Step 6: Final answer
    x = 5,332.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.