Home / 13,189.74-19,784.57-5,398.56

Finding the Fourth Proportional to 13,189.74, 19,784.57 and 5,398.56

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Solution

The fourth proportional to 13,189.74, 19,784.57 and 5,398.56 is: 8,097.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.74 : 19,784.57 = 5,398.56 : x
  2. Step 2: Convert to fraction form
    13,189.74/19,784.57 = 5,398.56/x
  3. Step 3: Cross multiply
    13,189.74x = 19,784.57 × 5,398.56
  4. Step 4: Simplify right side
    13,189.74x = 106,808,161.23
  5. Step 5: Solve for x
    x = 106,808,161.23/13,189.74
  6. Step 6: Final answer
    x = 8,097.82

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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.