Home / 13,928.69-19,221.90-7,641.07

Finding the Fourth Proportional to 13,928.69, 19,221.90 and 7,641.07

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Solution

The fourth proportional to 13,928.69, 19,221.90 and 7,641.07 is: 10,544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.69 : 19,221.90 = 7,641.07 : x
  2. Step 2: Convert to fraction form
    13,928.69/19,221.90 = 7,641.07/x
  3. Step 3: Cross multiply
    13,928.69x = 19,221.90 × 7,641.07
  4. Step 4: Simplify right side
    13,928.69x = 146,875,749.12
  5. Step 5: Solve for x
    x = 146,875,749.12/13,928.69
  6. Step 6: Final answer
    x = 10,544.84

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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.