Home / 28,111.09-38,788.62-16,785.16

Finding the Fourth Proportional to 28,111.09, 38,788.62 and 16,785.16

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Solution

The fourth proportional to 28,111.09, 38,788.62 and 16,785.16 is: 23,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.09 : 38,788.62 = 16,785.16 : x
  2. Step 2: Convert to fraction form
    28,111.09/38,788.62 = 16,785.16/x
  3. Step 3: Cross multiply
    28,111.09x = 38,788.62 × 16,785.16
  4. Step 4: Simplify right side
    28,111.09x = 651,073,192.88
  5. Step 5: Solve for x
    x = 651,073,192.88/28,111.09
  6. Step 6: Final answer
    x = 23,160.72

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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.