Home / 30,888.55-46,335.53-12,872.80

Finding the Fourth Proportional to 30,888.55, 46,335.53 and 12,872.80

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Solution

The fourth proportional to 30,888.55, 46,335.53 and 12,872.80 is: 19,310.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,888.55 : 46,335.53 = 12,872.80 : x
  2. Step 2: Convert to fraction form
    30,888.55/46,335.53 = 12,872.80/x
  3. Step 3: Cross multiply
    30,888.55x = 46,335.53 × 12,872.80
  4. Step 4: Simplify right side
    30,888.55x = 596,468,010.58
  5. Step 5: Solve for x
    x = 596,468,010.58/30,888.55
  6. Step 6: Final answer
    x = 19,310.33

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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.