Home / 12,769.40-17,621.75-7,103.96

Finding the Fourth Proportional to 12,769.40, 17,621.75 and 7,103.96

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Solution

The fourth proportional to 12,769.40, 17,621.75 and 7,103.96 is: 9,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.40 : 17,621.75 = 7,103.96 : x
  2. Step 2: Convert to fraction form
    12,769.40/17,621.75 = 7,103.96/x
  3. Step 3: Cross multiply
    12,769.40x = 17,621.75 × 7,103.96
  4. Step 4: Simplify right side
    12,769.40x = 125,184,207.13
  5. Step 5: Solve for x
    x = 125,184,207.13/12,769.40
  6. Step 6: Final answer
    x = 9,803.45

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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.