Home / 21,310.12-29,407.56-12,358.44

Finding the Fourth Proportional to 21,310.12, 29,407.56 and 12,358.44

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Solution

The fourth proportional to 21,310.12, 29,407.56 and 12,358.44 is: 17,054.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.12 : 29,407.56 = 12,358.44 : x
  2. Step 2: Convert to fraction form
    21,310.12/29,407.56 = 12,358.44/x
  3. Step 3: Cross multiply
    21,310.12x = 29,407.56 × 12,358.44
  4. Step 4: Simplify right side
    21,310.12x = 363,431,565.81
  5. Step 5: Solve for x
    x = 363,431,565.81/21,310.12
  6. Step 6: Final answer
    x = 17,054.41

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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.