Home / 21,170.48-29,219.06-12,216.74

Finding the Fourth Proportional to 21,170.48, 29,219.06 and 12,216.74

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Solution

The fourth proportional to 21,170.48, 29,219.06 and 12,216.74 is: 16,861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.48 : 29,219.06 = 12,216.74 : x
  2. Step 2: Convert to fraction form
    21,170.48/29,219.06 = 12,216.74/x
  3. Step 3: Cross multiply
    21,170.48x = 29,219.06 × 12,216.74
  4. Step 4: Simplify right side
    21,170.48x = 356,961,543.51
  5. Step 5: Solve for x
    x = 356,961,543.51/21,170.48
  6. Step 6: Final answer
    x = 16,861.29

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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.