Home / 21,548.16-29,740.76-13,983.88

Finding the Fourth Proportional to 21,548.16, 29,740.76 and 13,983.88

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Solution

The fourth proportional to 21,548.16, 29,740.76 and 13,983.88 is: 19,300.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.16 : 29,740.76 = 13,983.88 : x
  2. Step 2: Convert to fraction form
    21,548.16/29,740.76 = 13,983.88/x
  3. Step 3: Cross multiply
    21,548.16x = 29,740.76 × 13,983.88
  4. Step 4: Simplify right side
    21,548.16x = 415,891,218.95
  5. Step 5: Solve for x
    x = 415,891,218.95/21,548.16
  6. Step 6: Final answer
    x = 19,300.54

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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.