Home / 21,487.26-32,229.58-12,777.60

Finding the Fourth Proportional to 21,487.26, 32,229.58 and 12,777.60

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Solution

The fourth proportional to 21,487.26, 32,229.58 and 12,777.60 is: 19,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.26 : 32,229.58 = 12,777.60 : x
  2. Step 2: Convert to fraction form
    21,487.26/32,229.58 = 12,777.60/x
  3. Step 3: Cross multiply
    21,487.26x = 32,229.58 × 12,777.60
  4. Step 4: Simplify right side
    21,487.26x = 411,816,681.41
  5. Step 5: Solve for x
    x = 411,816,681.41/21,487.26
  6. Step 6: Final answer
    x = 19,165.62

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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.