Home / 21,346.53-29,455.97-12,392.28

Finding the Fourth Proportional to 21,346.53, 29,455.97 and 12,392.28

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Solution

The fourth proportional to 21,346.53, 29,455.97 and 12,392.28 is: 17,100.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.53 : 29,455.97 = 12,392.28 : x
  2. Step 2: Convert to fraction form
    21,346.53/29,455.97 = 12,392.28/x
  3. Step 3: Cross multiply
    21,346.53x = 29,455.97 × 12,392.28
  4. Step 4: Simplify right side
    21,346.53x = 365,026,627.91
  5. Step 5: Solve for x
    x = 365,026,627.91/21,346.53
  6. Step 6: Final answer
    x = 17,100.05

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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.