Home / 21,305.63-29,398.75-11,874.20

Finding the Fourth Proportional to 21,305.63, 29,398.75 and 11,874.20

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Solution

The fourth proportional to 21,305.63, 29,398.75 and 11,874.20 is: 16,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.63 : 29,398.75 = 11,874.20 : x
  2. Step 2: Convert to fraction form
    21,305.63/29,398.75 = 11,874.20/x
  3. Step 3: Cross multiply
    21,305.63x = 29,398.75 × 11,874.20
  4. Step 4: Simplify right side
    21,305.63x = 349,086,460.57
  5. Step 5: Solve for x
    x = 349,086,460.57/21,305.63
  6. Step 6: Final answer
    x = 16,384.70

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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.