Home / 21,175.02-29,216.83-12,220.62

Finding the Fourth Proportional to 21,175.02, 29,216.83 and 12,220.62

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Solution

The fourth proportional to 21,175.02, 29,216.83 and 12,220.62 is: 16,861.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.02 : 29,216.83 = 12,220.62 : x
  2. Step 2: Convert to fraction form
    21,175.02/29,216.83 = 12,220.62/x
  3. Step 3: Cross multiply
    21,175.02x = 29,216.83 × 12,220.62
  4. Step 4: Simplify right side
    21,175.02x = 357,047,777.03
  5. Step 5: Solve for x
    x = 357,047,777.03/21,175.02
  6. Step 6: Final answer
    x = 16,861.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.