Home / 21,368.21-29,520.86-17,070.75

Finding the Fourth Proportional to 21,368.21, 29,520.86 and 17,070.75

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Solution

The fourth proportional to 21,368.21, 29,520.86 and 17,070.75 is: 23,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.21 : 29,520.86 = 17,070.75 : x
  2. Step 2: Convert to fraction form
    21,368.21/29,520.86 = 17,070.75/x
  3. Step 3: Cross multiply
    21,368.21x = 29,520.86 × 17,070.75
  4. Step 4: Simplify right side
    21,368.21x = 503,943,135.49
  5. Step 5: Solve for x
    x = 503,943,135.49/21,368.21
  6. Step 6: Final answer
    x = 23,583.78

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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.