Home / 12,809.18-19,213.09-4,915.49

Finding the Fourth Proportional to 12,809.18, 19,213.09 and 4,915.49

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Solution

The fourth proportional to 12,809.18, 19,213.09 and 4,915.49 is: 7,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.18 : 19,213.09 = 4,915.49 : x
  2. Step 2: Convert to fraction form
    12,809.18/19,213.09 = 4,915.49/x
  3. Step 3: Cross multiply
    12,809.18x = 19,213.09 × 4,915.49
  4. Step 4: Simplify right side
    12,809.18x = 94,441,643.41
  5. Step 5: Solve for x
    x = 94,441,643.41/12,809.18
  6. Step 6: Final answer
    x = 7,372.96

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Double scale
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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.