Home / 19,638.40-29,399.73-12,962.59

Finding the Fourth Proportional to 19,638.40, 29,399.73 and 12,962.59

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Solution

The fourth proportional to 19,638.40, 29,399.73 and 12,962.59 is: 19,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.40 : 29,399.73 = 12,962.59 : x
  2. Step 2: Convert to fraction form
    19,638.40/29,399.73 = 12,962.59/x
  3. Step 3: Cross multiply
    19,638.40x = 29,399.73 × 12,962.59
  4. Step 4: Simplify right side
    19,638.40x = 381,096,646.10
  5. Step 5: Solve for x
    x = 381,096,646.10/19,638.40
  6. Step 6: Final answer
    x = 19,405.69

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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.