Home / 21,762.84-30,031.44-12,331.20

Finding the Fourth Proportional to 21,762.84, 30,031.44 and 12,331.20

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Solution

The fourth proportional to 21,762.84, 30,031.44 and 12,331.20 is: 17,016.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.84 : 30,031.44 = 12,331.20 : x
  2. Step 2: Convert to fraction form
    21,762.84/30,031.44 = 12,331.20/x
  3. Step 3: Cross multiply
    21,762.84x = 30,031.44 × 12,331.20
  4. Step 4: Simplify right side
    21,762.84x = 370,323,692.93
  5. Step 5: Solve for x
    x = 370,323,692.93/21,762.84
  6. Step 6: Final answer
    x = 17,016.33

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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.