Home / 13,206.36-19,840.50-12,459.12

Finding the Fourth Proportional to 13,206.36, 19,840.50 and 12,459.12

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Solution

The fourth proportional to 13,206.36, 19,840.50 and 12,459.12 is: 18,717.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.36 : 19,840.50 = 12,459.12 : x
  2. Step 2: Convert to fraction form
    13,206.36/19,840.50 = 12,459.12/x
  3. Step 3: Cross multiply
    13,206.36x = 19,840.50 × 12,459.12
  4. Step 4: Simplify right side
    13,206.36x = 247,195,170.36
  5. Step 5: Solve for x
    x = 247,195,170.36/13,206.36
  6. Step 6: Final answer
    x = 18,717.89

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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.