Home / 13,011.23-19,505.88-5,109.35

Finding the Fourth Proportional to 13,011.23, 19,505.88 and 5,109.35

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Solution

The fourth proportional to 13,011.23, 19,505.88 and 5,109.35 is: 7,659.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.23 : 19,505.88 = 5,109.35 : x
  2. Step 2: Convert to fraction form
    13,011.23/19,505.88 = 5,109.35/x
  3. Step 3: Cross multiply
    13,011.23x = 19,505.88 × 5,109.35
  4. Step 4: Simplify right side
    13,011.23x = 99,662,270.45
  5. Step 5: Solve for x
    x = 99,662,270.45/13,011.23
  6. Step 6: Final answer
    x = 7,659.71

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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.