Home / 38,220.69-52,742.78-21,226.01

Finding the Fourth Proportional to 38,220.69, 52,742.78 and 21,226.01

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Solution

The fourth proportional to 38,220.69, 52,742.78 and 21,226.01 is: 29,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,220.69 : 52,742.78 = 21,226.01 : x
  2. Step 2: Convert to fraction form
    38,220.69/52,742.78 = 21,226.01/x
  3. Step 3: Cross multiply
    38,220.69x = 52,742.78 × 21,226.01
  4. Step 4: Simplify right side
    38,220.69x = 1,119,518,405.86
  5. Step 5: Solve for x
    x = 1,119,518,405.86/38,220.69
  6. Step 6: Final answer
    x = 29,290.90

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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.