Home / 21,174.51-29,216.15-12,220.11

Finding the Fourth Proportional to 21,174.51, 29,216.15 and 12,220.11

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Solution

The fourth proportional to 21,174.51, 29,216.15 and 12,220.11 is: 16,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.51 : 29,216.15 = 12,220.11 : x
  2. Step 2: Convert to fraction form
    21,174.51/29,216.15 = 12,220.11/x
  3. Step 3: Cross multiply
    21,174.51x = 29,216.15 × 12,220.11
  4. Step 4: Simplify right side
    21,174.51x = 357,024,566.78
  5. Step 5: Solve for x
    x = 357,024,566.78/21,174.51
  6. Step 6: Final answer
    x = 16,861.05

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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.