Home / 21,517.74-29,692.26-12,570.45

Finding the Fourth Proportional to 21,517.74, 29,692.26 and 12,570.45

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Solution

The fourth proportional to 21,517.74, 29,692.26 and 12,570.45 is: 17,345.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.74 : 29,692.26 = 12,570.45 : x
  2. Step 2: Convert to fraction form
    21,517.74/29,692.26 = 12,570.45/x
  3. Step 3: Cross multiply
    21,517.74x = 29,692.26 × 12,570.45
  4. Step 4: Simplify right side
    21,517.74x = 373,245,069.72
  5. Step 5: Solve for x
    x = 373,245,069.72/21,517.74
  6. Step 6: Final answer
    x = 17,345.92

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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.