Home / 21,486.36-29,652.99-11,929.28

Finding the Fourth Proportional to 21,486.36, 29,652.99 and 11,929.28

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Solution

The fourth proportional to 21,486.36, 29,652.99 and 11,929.28 is: 16,463.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.36 : 29,652.99 = 11,929.28 : x
  2. Step 2: Convert to fraction form
    21,486.36/29,652.99 = 11,929.28/x
  3. Step 3: Cross multiply
    21,486.36x = 29,652.99 × 11,929.28
  4. Step 4: Simplify right side
    21,486.36x = 353,738,627.55
  5. Step 5: Solve for x
    x = 353,738,627.55/21,486.36
  6. Step 6: Final answer
    x = 16,463.40

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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.