Home / 36,215.30-54,328.35-12,839.90

Finding the Fourth Proportional to 36,215.30, 54,328.35 and 12,839.90

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Solution

The fourth proportional to 36,215.30, 54,328.35 and 12,839.90 is: 19,261.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,215.30 : 54,328.35 = 12,839.90 : x
  2. Step 2: Convert to fraction form
    36,215.30/54,328.35 = 12,839.90/x
  3. Step 3: Cross multiply
    36,215.30x = 54,328.35 × 12,839.90
  4. Step 4: Simplify right side
    36,215.30x = 697,570,581.17
  5. Step 5: Solve for x
    x = 697,570,581.17/36,215.30
  6. Step 6: Final answer
    x = 19,261.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.