Home / 21,420.33-32,129.68-5,625.21

Finding the Fourth Proportional to 21,420.33, 32,129.68 and 5,625.21

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Solution

The fourth proportional to 21,420.33, 32,129.68 and 5,625.21 is: 8,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.33 : 32,129.68 = 5,625.21 : x
  2. Step 2: Convert to fraction form
    21,420.33/32,129.68 = 5,625.21/x
  3. Step 3: Cross multiply
    21,420.33x = 32,129.68 × 5,625.21
  4. Step 4: Simplify right side
    21,420.33x = 180,736,197.23
  5. Step 5: Solve for x
    x = 180,736,197.23/21,420.33
  6. Step 6: Final answer
    x = 8,437.60

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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.