Home / 19,355.61-29,033.38-12,780.25

Finding the Fourth Proportional to 19,355.61, 29,033.38 and 12,780.25

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Solution

The fourth proportional to 19,355.61, 29,033.38 and 12,780.25 is: 19,170.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,355.61 : 29,033.38 = 12,780.25 : x
  2. Step 2: Convert to fraction form
    19,355.61/29,033.38 = 12,780.25/x
  3. Step 3: Cross multiply
    19,355.61x = 29,033.38 × 12,780.25
  4. Step 4: Simplify right side
    19,355.61x = 371,053,854.75
  5. Step 5: Solve for x
    x = 371,053,854.75/19,355.61
  6. Step 6: Final answer
    x = 19,170.35

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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.