Home / 21,614.60-29,831.10-12,665.68

Finding the Fourth Proportional to 21,614.60, 29,831.10 and 12,665.68

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Solution

The fourth proportional to 21,614.60, 29,831.10 and 12,665.68 is: 17,480.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.60 : 29,831.10 = 12,665.68 : x
  2. Step 2: Convert to fraction form
    21,614.60/29,831.10 = 12,665.68/x
  3. Step 3: Cross multiply
    21,614.60x = 29,831.10 × 12,665.68
  4. Step 4: Simplify right side
    21,614.60x = 377,831,166.65
  5. Step 5: Solve for x
    x = 377,831,166.65/21,614.60
  6. Step 6: Final answer
    x = 17,480.37

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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.