Home / 23,421.21-32,320.89-12,810.75

Finding the Fourth Proportional to 23,421.21, 32,320.89 and 12,810.75

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Solution

The fourth proportional to 23,421.21, 32,320.89 and 12,810.75 is: 17,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,421.21 : 32,320.89 = 12,810.75 : x
  2. Step 2: Convert to fraction form
    23,421.21/32,320.89 = 12,810.75/x
  3. Step 3: Cross multiply
    23,421.21x = 32,320.89 × 12,810.75
  4. Step 4: Simplify right side
    23,421.21x = 414,054,841.57
  5. Step 5: Solve for x
    x = 414,054,841.57/23,421.21
  6. Step 6: Final answer
    x = 17,678.63

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Half scale
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Double scale
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Similar ratio
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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.