Home / 21,420.14-32,124.05-7,379.60

Finding the Fourth Proportional to 21,420.14, 32,124.05 and 7,379.60

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Solution

The fourth proportional to 21,420.14, 32,124.05 and 7,379.60 is: 11,067.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.14 : 32,124.05 = 7,379.60 : x
  2. Step 2: Convert to fraction form
    21,420.14/32,124.05 = 7,379.60/x
  3. Step 3: Cross multiply
    21,420.14x = 32,124.05 × 7,379.60
  4. Step 4: Simplify right side
    21,420.14x = 237,062,602.48
  5. Step 5: Solve for x
    x = 237,062,602.48/21,420.14
  6. Step 6: Final answer
    x = 11,067.28

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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.