Home / 13,617.45-20,518.85-11,206.35

Finding the Fourth Proportional to 13,617.45, 20,518.85 and 11,206.35

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Solution

The fourth proportional to 13,617.45, 20,518.85 and 11,206.35 is: 16,885.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.45 : 20,518.85 = 11,206.35 : x
  2. Step 2: Convert to fraction form
    13,617.45/20,518.85 = 11,206.35/x
  3. Step 3: Cross multiply
    13,617.45x = 20,518.85 × 11,206.35
  4. Step 4: Simplify right side
    13,617.45x = 229,941,442.71
  5. Step 5: Solve for x
    x = 229,941,442.71/13,617.45
  6. Step 6: Final answer
    x = 16,885.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.