Home / 12,009.69-18,015.40-4,614.15

Finding the Fourth Proportional to 12,009.69, 18,015.40 and 4,614.15

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Solution

The fourth proportional to 12,009.69, 18,015.40 and 4,614.15 is: 6,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.69 : 18,015.40 = 4,614.15 : x
  2. Step 2: Convert to fraction form
    12,009.69/18,015.40 = 4,614.15/x
  3. Step 3: Cross multiply
    12,009.69x = 18,015.40 × 4,614.15
  4. Step 4: Simplify right side
    12,009.69x = 83,125,831.24
  5. Step 5: Solve for x
    x = 83,125,831.24/12,009.69
  6. Step 6: Final answer
    x = 6,921.56

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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.