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Finding the Fourth Proportional to 10,472.12, 14,464.35 and 7,831.28

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Solution

The fourth proportional to 10,472.12, 14,464.35 and 7,831.28 is: 10,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,472.12 : 14,464.35 = 7,831.28 : x
  2. Step 2: Convert to fraction form
    10,472.12/14,464.35 = 7,831.28/x
  3. Step 3: Cross multiply
    10,472.12x = 14,464.35 × 7,831.28
  4. Step 4: Simplify right side
    10,472.12x = 113,274,374.87
  5. Step 5: Solve for x
    x = 113,274,374.87/10,472.12
  6. Step 6: Final answer
    x = 10,816.76

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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.