Home / 21,125.15-29,150.73-12,625.59

Finding the Fourth Proportional to 21,125.15, 29,150.73 and 12,625.59

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Solution

The fourth proportional to 21,125.15, 29,150.73 and 12,625.59 is: 17,422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.15 : 29,150.73 = 12,625.59 : x
  2. Step 2: Convert to fraction form
    21,125.15/29,150.73 = 12,625.59/x
  3. Step 3: Cross multiply
    21,125.15x = 29,150.73 × 12,625.59
  4. Step 4: Simplify right side
    21,125.15x = 368,045,165.18
  5. Step 5: Solve for x
    x = 368,045,165.18/21,125.15
  6. Step 6: Final answer
    x = 17,422.14

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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.