Home / 21,871.16-30,171.12-14,330.12

Finding the Fourth Proportional to 21,871.16, 30,171.12 and 14,330.12

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Solution

The fourth proportional to 21,871.16, 30,171.12 and 14,330.12 is: 19,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.16 : 30,171.12 = 14,330.12 : x
  2. Step 2: Convert to fraction form
    21,871.16/30,171.12 = 14,330.12/x
  3. Step 3: Cross multiply
    21,871.16x = 30,171.12 × 14,330.12
  4. Step 4: Simplify right side
    21,871.16x = 432,355,770.13
  5. Step 5: Solve for x
    x = 432,355,770.13/21,871.16
  6. Step 6: Final answer
    x = 19,768.31

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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.