Home / 21,669.60-32,504.40-16,420.80

Finding the Fourth Proportional to 21,669.60, 32,504.40 and 16,420.80

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Solution

The fourth proportional to 21,669.60, 32,504.40 and 16,420.80 is: 24,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.60 : 32,504.40 = 16,420.80 : x
  2. Step 2: Convert to fraction form
    21,669.60/32,504.40 = 16,420.80/x
  3. Step 3: Cross multiply
    21,669.60x = 32,504.40 × 16,420.80
  4. Step 4: Simplify right side
    21,669.60x = 533,748,251.52
  5. Step 5: Solve for x
    x = 533,748,251.52/21,669.60
  6. Step 6: Final answer
    x = 24,631.20

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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.