Home / 21,199.92-29,253.60-12,700.32

Finding the Fourth Proportional to 21,199.92, 29,253.60 and 12,700.32

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Solution

The fourth proportional to 21,199.92, 29,253.60 and 12,700.32 is: 17,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.92 : 29,253.60 = 12,700.32 : x
  2. Step 2: Convert to fraction form
    21,199.92/29,253.60 = 12,700.32/x
  3. Step 3: Cross multiply
    21,199.92x = 29,253.60 × 12,700.32
  4. Step 4: Simplify right side
    21,199.92x = 371,530,081.15
  5. Step 5: Solve for x
    x = 371,530,081.15/21,199.92
  6. Step 6: Final answer
    x = 17,525.07

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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.