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Finding the Fourth Proportional to 11,479.08, 15,831.54 and 7,497.12

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Solution

The fourth proportional to 11,479.08, 15,831.54 and 7,497.12 is: 10,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.08 : 15,831.54 = 7,497.12 : x
  2. Step 2: Convert to fraction form
    11,479.08/15,831.54 = 7,497.12/x
  3. Step 3: Cross multiply
    11,479.08x = 15,831.54 × 7,497.12
  4. Step 4: Simplify right side
    11,479.08x = 118,690,955.16
  5. Step 5: Solve for x
    x = 118,690,955.16/11,479.08
  6. Step 6: Final answer
    x = 10,339.76

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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.