Home / 21,119.12-29,143.56-12,625.98

Finding the Fourth Proportional to 21,119.12, 29,143.56 and 12,625.98

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Solution

The fourth proportional to 21,119.12, 29,143.56 and 12,625.98 is: 17,423.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.12 : 29,143.56 = 12,625.98 : x
  2. Step 2: Convert to fraction form
    21,119.12/29,143.56 = 12,625.98/x
  3. Step 3: Cross multiply
    21,119.12x = 29,143.56 × 12,625.98
  4. Step 4: Simplify right side
    21,119.12x = 367,966,005.69
  5. Step 5: Solve for x
    x = 367,966,005.69/21,119.12
  6. Step 6: Final answer
    x = 17,423.36

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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.