Home / 21,117.72-31,688.46-14,549.16

Finding the Fourth Proportional to 21,117.72, 31,688.46 and 14,549.16

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Solution

The fourth proportional to 21,117.72, 31,688.46 and 14,549.16 is: 21,831.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.72 : 31,688.46 = 14,549.16 : x
  2. Step 2: Convert to fraction form
    21,117.72/31,688.46 = 14,549.16/x
  3. Step 3: Cross multiply
    21,117.72x = 31,688.46 × 14,549.16
  4. Step 4: Simplify right side
    21,117.72x = 461,040,474.69
  5. Step 5: Solve for x
    x = 461,040,474.69/21,117.72
  6. Step 6: Final answer
    x = 21,831.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.