Home / 15,407.56-21,260.60-8,692.80

Finding the Fourth Proportional to 15,407.56, 21,260.60 and 8,692.80

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Solution

The fourth proportional to 15,407.56, 21,260.60 and 8,692.80 is: 11,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.56 : 21,260.60 = 8,692.80 : x
  2. Step 2: Convert to fraction form
    15,407.56/21,260.60 = 8,692.80/x
  3. Step 3: Cross multiply
    15,407.56x = 21,260.60 × 8,692.80
  4. Step 4: Simplify right side
    15,407.56x = 184,814,143.68
  5. Step 5: Solve for x
    x = 184,814,143.68/15,407.56
  6. Step 6: Final answer
    x = 11,995.03

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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.