Home / 19,928.20-29,892.30-13,707.40

Finding the Fourth Proportional to 19,928.20, 29,892.30 and 13,707.40

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Solution

The fourth proportional to 19,928.20, 29,892.30 and 13,707.40 is: 20,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.20 : 29,892.30 = 13,707.40 : x
  2. Step 2: Convert to fraction form
    19,928.20/29,892.30 = 13,707.40/x
  3. Step 3: Cross multiply
    19,928.20x = 29,892.30 × 13,707.40
  4. Step 4: Simplify right side
    19,928.20x = 409,745,713.02
  5. Step 5: Solve for x
    x = 409,745,713.02/19,928.20
  6. Step 6: Final answer
    x = 20,561.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.