Home / 21,476.14-29,630.36-12,400.34

Finding the Fourth Proportional to 21,476.14, 29,630.36 and 12,400.34

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Solution

The fourth proportional to 21,476.14, 29,630.36 and 12,400.34 is: 17,108.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.14 : 29,630.36 = 12,400.34 : x
  2. Step 2: Convert to fraction form
    21,476.14/29,630.36 = 12,400.34/x
  3. Step 3: Cross multiply
    21,476.14x = 29,630.36 × 12,400.34
  4. Step 4: Simplify right side
    21,476.14x = 367,426,518.09
  5. Step 5: Solve for x
    x = 367,426,518.09/21,476.14
  6. Step 6: Final answer
    x = 17,108.59

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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.