Home / 28,065.97-38,714.21-20,503.05

Finding the Fourth Proportional to 28,065.97, 38,714.21 and 20,503.05

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Solution

The fourth proportional to 28,065.97, 38,714.21 and 20,503.05 is: 28,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.97 : 38,714.21 = 20,503.05 : x
  2. Step 2: Convert to fraction form
    28,065.97/38,714.21 = 20,503.05/x
  3. Step 3: Cross multiply
    28,065.97x = 38,714.21 × 20,503.05
  4. Step 4: Simplify right side
    28,065.97x = 793,759,383.34
  5. Step 5: Solve for x
    x = 793,759,383.34/28,065.97
  6. Step 6: Final answer
    x = 28,281.92

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Half scale
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Double scale
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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.