Home / 21,617.29-29,831.81-12,057.19

Finding the Fourth Proportional to 21,617.29, 29,831.81 and 12,057.19

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Solution

The fourth proportional to 21,617.29, 29,831.81 and 12,057.19 is: 16,638.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.29 : 29,831.81 = 12,057.19 : x
  2. Step 2: Convert to fraction form
    21,617.29/29,831.81 = 12,057.19/x
  3. Step 3: Cross multiply
    21,617.29x = 29,831.81 × 12,057.19
  4. Step 4: Simplify right side
    21,617.29x = 359,687,591.77
  5. Step 5: Solve for x
    x = 359,687,591.77/21,617.29
  6. Step 6: Final answer
    x = 16,638.89

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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.