Home / 19,785.94-29,699.43-13,257.76

Finding the Fourth Proportional to 19,785.94, 29,699.43 and 13,257.76

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Solution

The fourth proportional to 19,785.94, 29,699.43 and 13,257.76 is: 19,900.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.94 : 29,699.43 = 13,257.76 : x
  2. Step 2: Convert to fraction form
    19,785.94/29,699.43 = 13,257.76/x
  3. Step 3: Cross multiply
    19,785.94x = 29,699.43 × 13,257.76
  4. Step 4: Simplify right side
    19,785.94x = 393,747,915.08
  5. Step 5: Solve for x
    x = 393,747,915.08/19,785.94
  6. Step 6: Final answer
    x = 19,900.39

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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.