Home / 15,862.55-21,890.30-8,692.64

Finding the Fourth Proportional to 15,862.55, 21,890.30 and 8,692.64

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Solution

The fourth proportional to 15,862.55, 21,890.30 and 8,692.64 is: 11,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.55 : 21,890.30 = 8,692.64 : x
  2. Step 2: Convert to fraction form
    15,862.55/21,890.30 = 8,692.64/x
  3. Step 3: Cross multiply
    15,862.55x = 21,890.30 × 8,692.64
  4. Step 4: Simplify right side
    15,862.55x = 190,284,344.48
  5. Step 5: Solve for x
    x = 190,284,344.48/15,862.55
  6. Step 6: Final answer
    x = 11,995.83

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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.