Home / 21,314.64-29,415.60-11,883.60

Finding the Fourth Proportional to 21,314.64, 29,415.60 and 11,883.60

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Solution

The fourth proportional to 21,314.64, 29,415.60 and 11,883.60 is: 16,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.64 : 29,415.60 = 11,883.60 : x
  2. Step 2: Convert to fraction form
    21,314.64/29,415.60 = 11,883.60/x
  3. Step 3: Cross multiply
    21,314.64x = 29,415.60 × 11,883.60
  4. Step 4: Simplify right side
    21,314.64x = 349,563,224.16
  5. Step 5: Solve for x
    x = 349,563,224.16/21,314.64
  6. Step 6: Final answer
    x = 16,400.15

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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.