Home / 28,109.09-38,785.86-16,783.16

Finding the Fourth Proportional to 28,109.09, 38,785.86 and 16,783.16

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Solution

The fourth proportional to 28,109.09, 38,785.86 and 16,783.16 is: 23,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.09 : 38,785.86 = 16,783.16 : x
  2. Step 2: Convert to fraction form
    28,109.09/38,785.86 = 16,783.16/x
  3. Step 3: Cross multiply
    28,109.09x = 38,785.86 × 16,783.16
  4. Step 4: Simplify right side
    28,109.09x = 650,949,100.19
  5. Step 5: Solve for x
    x = 650,949,100.19/28,109.09
  6. Step 6: Final answer
    x = 23,157.96

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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.