Home / 13,157.43-19,746.62-6,921.08

Finding the Fourth Proportional to 13,157.43, 19,746.62 and 6,921.08

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Solution

The fourth proportional to 13,157.43, 19,746.62 and 6,921.08 is: 10,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.43 : 19,746.62 = 6,921.08 : x
  2. Step 2: Convert to fraction form
    13,157.43/19,746.62 = 6,921.08/x
  3. Step 3: Cross multiply
    13,157.43x = 19,746.62 × 6,921.08
  4. Step 4: Simplify right side
    13,157.43x = 136,667,936.75
  5. Step 5: Solve for x
    x = 136,667,936.75/13,157.43
  6. Step 6: Final answer
    x = 10,387.13

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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.