Home / 21,152.55-29,189.75-12,200.43

Finding the Fourth Proportional to 21,152.55, 29,189.75 and 12,200.43

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Solution

The fourth proportional to 21,152.55, 29,189.75 and 12,200.43 is: 16,836.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.55 : 29,189.75 = 12,200.43 : x
  2. Step 2: Convert to fraction form
    21,152.55/29,189.75 = 12,200.43/x
  3. Step 3: Cross multiply
    21,152.55x = 29,189.75 × 12,200.43
  4. Step 4: Simplify right side
    21,152.55x = 356,127,440.59
  5. Step 5: Solve for x
    x = 356,127,440.59/21,152.55
  6. Step 6: Final answer
    x = 16,836.15

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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.