Home / 21,305.12-29,401.08-11,875.52

Finding the Fourth Proportional to 21,305.12, 29,401.08 and 11,875.52

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Solution

The fourth proportional to 21,305.12, 29,401.08 and 11,875.52 is: 16,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.12 : 29,401.08 = 11,875.52 : x
  2. Step 2: Convert to fraction form
    21,305.12/29,401.08 = 11,875.52/x
  3. Step 3: Cross multiply
    21,305.12x = 29,401.08 × 11,875.52
  4. Step 4: Simplify right side
    21,305.12x = 349,153,113.56
  5. Step 5: Solve for x
    x = 349,153,113.56/21,305.12
  6. Step 6: Final answer
    x = 16,388.23

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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.