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Finding the Fourth Proportional to 28,020.94, 38,742.71 and 26,781.64

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Solution

The fourth proportional to 28,020.94, 38,742.71 and 26,781.64 is: 37,029.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.94 : 38,742.71 = 26,781.64 : x
  2. Step 2: Convert to fraction form
    28,020.94/38,742.71 = 26,781.64/x
  3. Step 3: Cross multiply
    28,020.94x = 38,742.71 × 26,781.64
  4. Step 4: Simplify right side
    28,020.94x = 1,037,593,081.08
  5. Step 5: Solve for x
    x = 1,037,593,081.08/28,020.94
  6. Step 6: Final answer
    x = 37,029.21

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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.