Home / 28,065.96-38,714.22-20,503.05

Finding the Fourth Proportional to 28,065.96, 38,714.22 and 20,503.05

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Solution

The fourth proportional to 28,065.96, 38,714.22 and 20,503.05 is: 28,281.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.96 : 38,714.22 = 20,503.05 : x
  2. Step 2: Convert to fraction form
    28,065.96/38,714.22 = 20,503.05/x
  3. Step 3: Cross multiply
    28,065.96x = 38,714.22 × 20,503.05
  4. Step 4: Simplify right side
    28,065.96x = 793,759,588.37
  5. Step 5: Solve for x
    x = 793,759,588.37/28,065.96
  6. Step 6: Final answer
    x = 28,281.93

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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.