Home / 21,652.42-29,878.18-12,219.16

Finding the Fourth Proportional to 21,652.42, 29,878.18 and 12,219.16

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Solution

The fourth proportional to 21,652.42, 29,878.18 and 12,219.16 is: 16,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.42 : 29,878.18 = 12,219.16 : x
  2. Step 2: Convert to fraction form
    21,652.42/29,878.18 = 12,219.16/x
  3. Step 3: Cross multiply
    21,652.42x = 29,878.18 × 12,219.16
  4. Step 4: Simplify right side
    21,652.42x = 365,086,261.93
  5. Step 5: Solve for x
    x = 365,086,261.93/21,652.42
  6. Step 6: Final answer
    x = 16,861.22

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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.