Home / 15,679.36-21,642.72-14,018.60

Finding the Fourth Proportional to 15,679.36, 21,642.72 and 14,018.60

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Solution

The fourth proportional to 15,679.36, 21,642.72 and 14,018.60 is: 19,350.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.36 : 21,642.72 = 14,018.60 : x
  2. Step 2: Convert to fraction form
    15,679.36/21,642.72 = 14,018.60/x
  3. Step 3: Cross multiply
    15,679.36x = 21,642.72 × 14,018.60
  4. Step 4: Simplify right side
    15,679.36x = 303,400,634.59
  5. Step 5: Solve for x
    x = 303,400,634.59/15,679.36
  6. Step 6: Final answer
    x = 19,350.32

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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.