Home / 13,908.38-19,195.35-7,938.68

Finding the Fourth Proportional to 13,908.38, 19,195.35 and 7,938.68

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Solution

The fourth proportional to 13,908.38, 19,195.35 and 7,938.68 is: 10,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.38 : 19,195.35 = 7,938.68 : x
  2. Step 2: Convert to fraction form
    13,908.38/19,195.35 = 7,938.68/x
  3. Step 3: Cross multiply
    13,908.38x = 19,195.35 × 7,938.68
  4. Step 4: Simplify right side
    13,908.38x = 152,385,741.14
  5. Step 5: Solve for x
    x = 152,385,741.14/13,908.38
  6. Step 6: Final answer
    x = 10,956.40

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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.