Home / 21,478.14-32,221.26-7,437.60

Finding the Fourth Proportional to 21,478.14, 32,221.26 and 7,437.60

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Solution

The fourth proportional to 21,478.14, 32,221.26 and 7,437.60 is: 11,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.14 : 32,221.26 = 7,437.60 : x
  2. Step 2: Convert to fraction form
    21,478.14/32,221.26 = 7,437.60/x
  3. Step 3: Cross multiply
    21,478.14x = 32,221.26 × 7,437.60
  4. Step 4: Simplify right side
    21,478.14x = 239,648,843.38
  5. Step 5: Solve for x
    x = 239,648,843.38/21,478.14
  6. Step 6: Final answer
    x = 11,157.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.