Home / 21,936.31-30,271.99-11,864.74

Finding the Fourth Proportional to 21,936.31, 30,271.99 and 11,864.74

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Solution

The fourth proportional to 21,936.31, 30,271.99 and 11,864.74 is: 16,373.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.31 : 30,271.99 = 11,864.74 : x
  2. Step 2: Convert to fraction form
    21,936.31/30,271.99 = 11,864.74/x
  3. Step 3: Cross multiply
    21,936.31x = 30,271.99 × 11,864.74
  4. Step 4: Simplify right side
    21,936.31x = 359,169,290.63
  5. Step 5: Solve for x
    x = 359,169,290.63/21,936.31
  6. Step 6: Final answer
    x = 16,373.28

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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.