Home / 14,218.88-21,436.60-13,216.64

Finding the Fourth Proportional to 14,218.88, 21,436.60 and 13,216.64

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Solution

The fourth proportional to 14,218.88, 21,436.60 and 13,216.64 is: 19,925.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.88 : 21,436.60 = 13,216.64 : x
  2. Step 2: Convert to fraction form
    14,218.88/21,436.60 = 13,216.64/x
  3. Step 3: Cross multiply
    14,218.88x = 21,436.60 × 13,216.64
  4. Step 4: Simplify right side
    14,218.88x = 283,319,825.02
  5. Step 5: Solve for x
    x = 283,319,825.02/14,218.88
  6. Step 6: Final answer
    x = 19,925.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.