Home / 21,170.04-31,727.16-11,814.48

Finding the Fourth Proportional to 21,170.04, 31,727.16 and 11,814.48

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Solution

The fourth proportional to 21,170.04, 31,727.16 and 11,814.48 is: 17,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.04 : 31,727.16 = 11,814.48 : x
  2. Step 2: Convert to fraction form
    21,170.04/31,727.16 = 11,814.48/x
  3. Step 3: Cross multiply
    21,170.04x = 31,727.16 × 11,814.48
  4. Step 4: Simplify right side
    21,170.04x = 374,839,897.28
  5. Step 5: Solve for x
    x = 374,839,897.28/21,170.04
  6. Step 6: Final answer
    x = 17,706.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.