Home / 13,928.47-19,221.35-7,960.34

Finding the Fourth Proportional to 13,928.47, 19,221.35 and 7,960.34

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Solution

The fourth proportional to 13,928.47, 19,221.35 and 7,960.34 is: 10,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.47 : 19,221.35 = 7,960.34 : x
  2. Step 2: Convert to fraction form
    13,928.47/19,221.35 = 7,960.34/x
  3. Step 3: Cross multiply
    13,928.47x = 19,221.35 × 7,960.34
  4. Step 4: Simplify right side
    13,928.47x = 153,008,534.29
  5. Step 5: Solve for x
    x = 153,008,534.29/13,928.47
  6. Step 6: Final answer
    x = 10,985.31

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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.