Home / 33,336.81-45,983.12-21,381.21

Finding the Fourth Proportional to 33,336.81, 45,983.12 and 21,381.21

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Solution

The fourth proportional to 33,336.81, 45,983.12 and 21,381.21 is: 29,492.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,336.81 : 45,983.12 = 21,381.21 : x
  2. Step 2: Convert to fraction form
    33,336.81/45,983.12 = 21,381.21/x
  3. Step 3: Cross multiply
    33,336.81x = 45,983.12 × 21,381.21
  4. Step 4: Simplify right side
    33,336.81x = 983,174,576.76
  5. Step 5: Solve for x
    x = 983,174,576.76/33,336.81
  6. Step 6: Final answer
    x = 29,492.16

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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.