Home / 28,823.99-39,780.72-16,891.88

Finding the Fourth Proportional to 28,823.99, 39,780.72 and 16,891.88

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Solution

The fourth proportional to 28,823.99, 39,780.72 and 16,891.88 is: 23,312.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,823.99 : 39,780.72 = 16,891.88 : x
  2. Step 2: Convert to fraction form
    28,823.99/39,780.72 = 16,891.88/x
  3. Step 3: Cross multiply
    28,823.99x = 39,780.72 × 16,891.88
  4. Step 4: Simplify right side
    28,823.99x = 671,970,949.65
  5. Step 5: Solve for x
    x = 671,970,949.65/28,823.99
  6. Step 6: Final answer
    x = 23,312.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.