Home / 21,312.54-29,414.88-12,365.64

Finding the Fourth Proportional to 21,312.54, 29,414.88 and 12,365.64

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Solution

The fourth proportional to 21,312.54, 29,414.88 and 12,365.64 is: 17,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.54 : 29,414.88 = 12,365.64 : x
  2. Step 2: Convert to fraction form
    21,312.54/29,414.88 = 12,365.64/x
  3. Step 3: Cross multiply
    21,312.54x = 29,414.88 × 12,365.64
  4. Step 4: Simplify right side
    21,312.54x = 363,733,816.72
  5. Step 5: Solve for x
    x = 363,733,816.72/21,312.54
  6. Step 6: Final answer
    x = 17,066.66

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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.