Home / 21,598.80-29,806.21-12,170.40

Finding the Fourth Proportional to 21,598.80, 29,806.21 and 12,170.40

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Solution

The fourth proportional to 21,598.80, 29,806.21 and 12,170.40 is: 16,795.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,598.80 : 29,806.21 = 12,170.40 : x
  2. Step 2: Convert to fraction form
    21,598.80/29,806.21 = 12,170.40/x
  3. Step 3: Cross multiply
    21,598.80x = 29,806.21 × 12,170.40
  4. Step 4: Simplify right side
    21,598.80x = 362,753,288.30
  5. Step 5: Solve for x
    x = 362,753,288.30/21,598.80
  6. Step 6: Final answer
    x = 16,795.07

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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.