Home / 21,359.64-29,476.89-11,928.81

Finding the Fourth Proportional to 21,359.64, 29,476.89 and 11,928.81

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Solution

The fourth proportional to 21,359.64, 29,476.89 and 11,928.81 is: 16,462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.64 : 29,476.89 = 11,928.81 : x
  2. Step 2: Convert to fraction form
    21,359.64/29,476.89 = 11,928.81/x
  3. Step 3: Cross multiply
    21,359.64x = 29,476.89 × 11,928.81
  4. Step 4: Simplify right side
    21,359.64x = 351,624,220.20
  5. Step 5: Solve for x
    x = 351,624,220.20/21,359.64
  6. Step 6: Final answer
    x = 16,462.09

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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.