Home / 21,645.56-29,871.79-12,214.13

Finding the Fourth Proportional to 21,645.56, 29,871.79 and 12,214.13

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Solution

The fourth proportional to 21,645.56, 29,871.79 and 12,214.13 is: 16,856.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645.56 : 29,871.79 = 12,214.13 : x
  2. Step 2: Convert to fraction form
    21,645.56/29,871.79 = 12,214.13/x
  3. Step 3: Cross multiply
    21,645.56x = 29,871.79 × 12,214.13
  4. Step 4: Simplify right side
    21,645.56x = 364,857,746.50
  5. Step 5: Solve for x
    x = 364,857,746.50/21,645.56
  6. Step 6: Final answer
    x = 16,856.01

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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.