Home / 11,009.04-15,171.48-7,859.76

Finding the Fourth Proportional to 11,009.04, 15,171.48 and 7,859.76

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Solution

The fourth proportional to 11,009.04, 15,171.48 and 7,859.76 is: 10,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.04 : 15,171.48 = 7,859.76 : x
  2. Step 2: Convert to fraction form
    11,009.04/15,171.48 = 7,859.76/x
  3. Step 3: Cross multiply
    11,009.04x = 15,171.48 × 7,859.76
  4. Step 4: Simplify right side
    11,009.04x = 119,244,191.64
  5. Step 5: Solve for x
    x = 119,244,191.64/11,009.04
  6. Step 6: Final answer
    x = 10,831.48

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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.