Home / 21,184.35-29,222.26-13,212.74

Finding the Fourth Proportional to 21,184.35, 29,222.26 and 13,212.74

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Solution

The fourth proportional to 21,184.35, 29,222.26 and 13,212.74 is: 18,226.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.35 : 29,222.26 = 13,212.74 : x
  2. Step 2: Convert to fraction form
    21,184.35/29,222.26 = 13,212.74/x
  3. Step 3: Cross multiply
    21,184.35x = 29,222.26 × 13,212.74
  4. Step 4: Simplify right side
    21,184.35x = 386,105,911.42
  5. Step 5: Solve for x
    x = 386,105,911.42/21,184.35
  6. Step 6: Final answer
    x = 18,226.00

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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.