Home / 21,110.39-29,127.53-12,611.16

Finding the Fourth Proportional to 21,110.39, 29,127.53 and 12,611.16

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Solution

The fourth proportional to 21,110.39, 29,127.53 and 12,611.16 is: 17,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.39 : 29,127.53 = 12,611.16 : x
  2. Step 2: Convert to fraction form
    21,110.39/29,127.53 = 12,611.16/x
  3. Step 3: Cross multiply
    21,110.39x = 29,127.53 × 12,611.16
  4. Step 4: Simplify right side
    21,110.39x = 367,331,972.76
  5. Step 5: Solve for x
    x = 367,331,972.76/21,110.39
  6. Step 6: Final answer
    x = 17,400.53

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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.