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Finding the Fourth Proportional to 12,562.70, 18,831.72 and 7,020.74

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Solution

The fourth proportional to 12,562.70, 18,831.72 and 7,020.74 is: 10,524.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,562.70 : 18,831.72 = 7,020.74 : x
  2. Step 2: Convert to fraction form
    12,562.70/18,831.72 = 7,020.74/x
  3. Step 3: Cross multiply
    12,562.70x = 18,831.72 × 7,020.74
  4. Step 4: Simplify right side
    12,562.70x = 132,212,609.87
  5. Step 5: Solve for x
    x = 132,212,609.87/12,562.70
  6. Step 6: Final answer
    x = 10,524.22

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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.