Home / 13,090.81-19,628.78-8,935.85

Finding the Fourth Proportional to 13,090.81, 19,628.78 and 8,935.85

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Solution

The fourth proportional to 13,090.81, 19,628.78 and 8,935.85 is: 13,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.81 : 19,628.78 = 8,935.85 : x
  2. Step 2: Convert to fraction form
    13,090.81/19,628.78 = 8,935.85/x
  3. Step 3: Cross multiply
    13,090.81x = 19,628.78 × 8,935.85
  4. Step 4: Simplify right side
    13,090.81x = 175,399,833.76
  5. Step 5: Solve for x
    x = 175,399,833.76/13,090.81
  6. Step 6: Final answer
    x = 13,398.70

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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.